Reviews

• ✓Daniella García Freyre approved the changesstudent

  “Excellent teacher and instructor. Has deep knowledge of iOS and explains concepts clearly and in a way that is easy to understand. Classes are engaging and well structured. I really enjoy learning with you!”

• ✓Fernando Jurado Madrid approved the changesstudent

  “Julio has a rare ability to spot which concepts aren’t entirely clear and reinforce them from the ground up.”

  Read the full review · Fernando Jurado Madrid

  Julio has a rare ability to spot which concepts aren’t entirely clear and reinforce them from the ground up. His way of teaching let me truly understand the why behind things and gain confidence when facing new challenges and technologies within the Apple ecosystem. He doesn’t just teach tools: he teaches you to think like a developer, always grounded in technical judgment and critical analysis. The classes are demanding, but also very dynamic and approachable. He explains clearly, keeps up the pace, and knows how to make complex topics understandable and practical. Beyond learning Swift, SwiftUI, SwiftData, architectures or any framework, what I take away is a much more solid way of working, based on consistency, reasoning and sound professional practice. I recommend Julio and Apple Coding Academy without any hesitation. It’s quality training that really marks a before and after. See you at the next one!

• ✓Juan Carlos Morán approved the changesstudent

  “I had the privilege of taking the Swift Developer Program 2025, and it’s been a transformative experience.”

  Read the full review · Juan Carlos Morán

  I had the privilege of taking the Swift Developer Program 2025, and it’s been a transformative experience. What I value most is how Julio manages to awaken development skills you didn’t know you had, or to connect the ones you already had. He doesn’t just teach Swift and SwiftUI; he gives you a complete view of what it means to be a developer: from algorithms and architectures to the strategic use of AI agents to boost your productivity. His passion for work done well is contagious. Every class makes it clear that he isn’t trying to produce “code typists,” but developers who understand what they do and why they do it. That philosophy makes the difference. I finished the program with every question I had answered and eager to apply what I’d learned. What has happened to me, personally and professionally, over these 2 months has surprised me. If you’re looking to take the leap into development for Apple platforms, don’t hesitate. The investment is worth every minute.

• ✓Nicolás Cadena Jaramillo approved the changesstudent

  “I’ve taken many courses throughout my career as a iOS Engineer, but the Swift Developer Program with Julio at Apple Coding Academy is genuinely one of the best. Julio is an outstanding instructor.”

  Read the full review · Nicolás Cadena Jaramillo

  I’ve taken many courses throughout my career as a iOS Engineer, but the Swift Developer Program with Julio at Apple Coding Academy is genuinely one of the best. Julio is an outstanding instructor. His profound expertise in Swift and the Apple ecosystem, combined with his attention to detail and engaging teaching style, makes challenging concepts clear and actionable. He has a unique ability to identify gaps in your foundational knowledge and address them systematically, which is precisely what I was looking for before advancing in my career. Beyond the technical content, Julio creates a learning environment that’s both rigorous and enjoyable. His sense of humor and energy keep the class engaged, turning what could be dry material into genuinely fun learning experiences. I came away with stronger Swift fundamentals, modern iOS development patterns, and renewed confidence in my technical foundation. I recommend Julio and Apple Coding Academy without hesitation. Thanks for the knowledge and the renewed confidence in my skills!

• ✓Ignacio Hernaiz Izquierdo approved the changesstudent

  “I’ve had the opportunity to take the Swift Developer Program 25 with Julio and it’s been an incredible experience. Julio is an incredible teacher, and his drive and passion come right through the screen.”

  Read the full review · Ignacio Hernaiz Izquierdo

  I’ve had the opportunity to take the Swift Developer Program 25 with Julio and it’s been an incredible experience. Julio is an incredible teacher, and his drive and passion come right through the screen. The way he organizes it, teaching it little by little and the way it should be done, is priceless. His knowledge of Swift/SwiftUI is impressive, and he knows things that don’t even show up in tutorials. If you’re hesitating about taking the course or the master’s program, my advice is don’t hesitate, because the leap you’ll make is incredible. The motivation Julio gives you to want to know more and research on your own is huge, and it makes you want to keep going once the class is over. I’d recommend that any company that needs an update, or good practices for building apps in Swift, not hesitate to get in touch with him.

• ✓Manuel Jesús Bermudo Rodríguez approved the changesstudent

  “I recently finished the class portion of the Swift Developer Program 25/26 and I’m currently working on the capstone project.”

  Read the full review · Manuel Jesús Bermudo Rodríguez

  I recently finished the class portion of the Swift Developer Program 25/26 and I’m currently working on the capstone project. Throughout the whole process, Julio has been an excellent teacher, always making sure we understood the concepts well and could apply them in practice to real development. He stands out for clear, direct and very well-structured communication, as well as for his deep knowledge of Swift, SwiftUI, SwiftData and the whole Apple ecosystem. Thanks to his way of teaching, the learning process has been much more accessible and effective. On top of that, his approachability, availability and patience create a very positive environment for learning and gaining confidence as an iOS developer. Without a doubt, he’s been a key role model during this stage of my training. In my experience, training as an iOS developer at Apple Coding Academy has been a great decision, and having Julio as my teacher has clearly made the difference.

• ✓Jon González Erauso approved the changesstudent

  “If you want to learn everything about Swift, Julio is your man.”

  Read the full review · Jon González Erauso

  If you want to learn everything about Swift, Julio is your man. This year, 2025, I took the Swift Mastery Program that Julio teaches, and even after working with Swift for years, it’s surprising how much I’ve been able to learn thanks to him. As he himself says, lots of people think they know Swift until they take a course with him and realize they don’t. You could say Julio knows the Swift language like the back of his hand. Julio is a great professional, but above all a great teacher, ready to help anyone who wants to learn more about development.

• ✓Erick Zamudio approved the changesstudent

  “I’m grateful for the opportunity to take part in the specialized training program in Apple Vision Pro development taught by Julio César (Vision Developer Program 24).”

  Read the full review · Erick Zamudio

  I’m grateful for the opportunity to take part in the specialized training program in Apple Vision Pro development taught by Julio César (Vision Developer Program 24). His deep knowledge of the platform, including the visionOS SDK and SwiftUI and design patterns, as well as his ability to convey spatial programming concepts clearly and concisely, were decisive for my understanding of the framework. I’d highlight his skill at structuring the learning process in a dynamic, interactive way. The sessions included practical examples, real-time demos, explanations of the technology’s core concepts and the implementation of immersive user interfaces. This hands-on approach, together with his evident passion for technology and his dedication to students’ progress (it’s worth noting that he cares about making sure the substance of the matter is understood), created a highly effective and inspiring learning environment. I highly recommend Julio César for anything related to teaching, implementing solutions and developing with Apple technologies, particularly in MR and VR with SwiftUI.

• ✓Jorge Tsitsaris approved the changesstudent

  “For any developer, or non-developer, who wants to get into the iOS or Apple world, there’s no option other than Julio César and his team. I’m not one to give recommendations, so as not to take credit away from any other trainer, but Julio is a special case.”

  Read the full review · Jorge Tsitsaris

  For any developer, or non-developer, who wants to get into the iOS or Apple world, there’s no option other than Julio César and his team. I’m not one to give recommendations, so as not to take credit away from any other trainer, but Julio is a special case. There’s no one more passionate about their work, or who lives it more, than he does… he’d like the days to be longer so he could devote more time to Apple. I’ve been an Android developer for more than 10 years now, and wanting to carve out a place for myself in the iOS world, I looked for the best learning path for the platform and ended up as a student in Apple Coding Academy’s Bootcamp 2024. Honestly, it’s been a turning point in the way I program. Julio’s way of explaining made me a better developer, even in the other areas I thought I already knew. Julio, thank you so much for what you give to the community. I recommend him, no matter what.

• ✓Juan López Bosch approved the changesstudent

  “I had the pleasure of attending the Vision Developer Program taught by Julio, and I can only thank him for his dedication, knowledge and passion. What stands out is his ability to get complex concepts across clearly and with a touch of humor.”

  Read the full review · Juan López Bosch

  I had the pleasure of attending the Vision Developer Program taught by Julio, and I can only thank him for his dedication, knowledge and passion. What stands out is his ability to get complex concepts across clearly and with a touch of humor. His practical approach and his willingness to answer any question, however small, made learning a very enriching experience. Thank you, Julio, for sharing your knowledge and for inspiring us to keep learning.

• ✓Rafael Hernandez approved the changesstudent

  “In Julio César I found a brilliant professional, the kind you don’t see anymore, a multidisciplinary rara avis with deep expertise in development for the Apple ecosystem.”

  Read the full review · Rafael Hernandez

  In Julio César I found a brilliant professional, the kind you don’t see anymore, a multidisciplinary rara avis with deep expertise in development for the Apple ecosystem. I put myself in his hands for comprehensive training, with the full stack program in Swift, and I didn’t stop learning for a single minute of the time we shared in the program. Three things define this professional: hard work, dedication and knowledge. Beyond that, I’m clear that no Swift project will be developed or run at my company without Julio giving us a few hours of consulting, because before jumping into the void, it’s best to at least tie yourself to a rope. It’s often hard for what you see of someone from the outside, on LinkedIn or the internet in general, to match reality. In Julio’s case, it’s backed up the moment you get into the technical side.

• ✓Luis Mª Tolosana Simon approved the changesstudent

  “I’ve been lucky enough to attend several courses with Julio César Fernández, and the experience couldn’t have been better.”

  Read the full review · Luis Mª Tolosana Simon

  I’ve been lucky enough to attend several courses with Julio César Fernández, and the experience couldn’t have been better. Julio is a true ace at everything to do with the Apple world, but what I like most is the way he teaches: he makes the difficult easy, and you can tell he loves sharing what he knows. He has a special knack for explaining topics clearly and simply, which isn’t always easy, and he always gets everyone to understand, however technical the content. Besides being a top-notch professional, he’s a great person and very approachable, something you really appreciate. With Julio, you don’t just learn: the way he explains things gets you hooked and leaves you wanting more. I wholeheartedly recommend him for any Apple-related training. Julio is THE reference for Apple platforms and someone you can trust if your goal is to learn and improve the way you develop. Whether you’re a beginner or an expert, with Julio in front of you, you’ll always learn something new.

• ✓Rubén García Hernando approved the changesstudent

  “The passion Julio has for what he does, for development, for Apple technology and for teaching alike, makes him an absolute reference in these fields.”

  Read the full review · Rubén García Hernando

  The passion Julio has for what he does, for development, for Apple technology and for teaching alike, makes him an absolute reference in these fields. He’s one of the hardest-working people I’ve ever met, and this, together with his passion, has led him to build a leading company in Apple technology training. He’s without a doubt someone worth listening to.

• ✓Javier Fernández approved the changesstudent

  “Julio César and his academy, “Apple Coding Academy,” are the best option if you really want to learn and build a solid foundation in how to program for Apple platforms. It’s that simple.”

• ✓Jesús Sanz approved the changesstudent

  “Julio is the best teacher I’ve ever had. In every one of his classes, you could see that he has very deep knowledge of programming and development for Apple platforms.”

  Read the full review · Jesús Sanz

  Julio is the best teacher I’ve ever had. In every one of his classes, you could see that he has very deep knowledge of programming and development for Apple platforms. After more than two years stumbling around with YouTube tutorials and Udemy courses trying to get started in mobile development, the way his classes work and the way he explains things helped me understand and be able to program in Swift and develop for iPhone, iPad, Mac, etc… in record time. If you want to learn to develop for Apple platforms, his courses are the key to success. 100% I’ll take more courses with him when Apple releases new technologies!

• ✓Noel Conde Algarra approved the changesstudent

  “I’ve taken several courses with Julio and I’ve always come away very happy. He’s a trainer who explains things very clearly, with broad experience in the world of development, and the content is always up to date.”

  Read the full review · Noel Conde Algarra

  I’ve taken several courses with Julio and I’ve always come away very happy. He’s a trainer who explains things very clearly, with broad experience in the world of development, and the content is always up to date. I’d recommend his courses without hesitation to anyone who wants to expand their knowledge of development for Apple platforms.

• ✓Jorge Moreno Huerta approved the changesstudent

  “Julio is an excellent trainer. I’ve learned a great deal from him about good practices when writing code (with Swift, SwiftUI and UIKit), app architecture, security, machine learning, TDD, Core Data, etc. His Udemy courses, the Swift Full Stack bootcamp, his book on Swift, his podcasts, etc. are excellent resources for learning.”

• ✓Alberto Aragón Peci approved the changesstudent

  “Julio César is a good trainer in everything related to Apple technologies.”

  Read the full review · Alberto Aragón Peci

  Julio César is a good trainer in everything related to Apple technologies. I’ve been able to train with him in two customized courses at two different companies, and he always steers us toward best practices in a very clear, understandable way. I recommend his courses to anyone who wants to learn in a direct way.

• ✓David de la Puente approved the changesstudent

  “Last year I took the SwiftUI course Julio teaches as part of his Bootcamp, and from the first day of class to the last I was amazed by how much he knows about the subject he teaches.”

  Read the full review · David de la Puente

  Last year I took the SwiftUI course Julio teaches as part of his Bootcamp, and from the first day of class to the last I was amazed by how much he knows about the subject he teaches. His classes are very well structured and he makes them very enjoyable. It’s true that I already had some knowledge of SwiftUI, but Julio goes into detail on every point covered in this module, and I even saw things I hadn’t known until then. For me, he’s a reference both for sharing Apple-related content and as a trainer. A great person and a very good teacher. I recommend his courses 100%.

• ✓Francisco José Martínez approved the changesstudent

  “An excellent trainer across the whole iOS platform, and also a communicator of everything new in the tech world, clearly and simply, starting from precise details that you can tell he studies in depth.”

  Read the full review · Francisco José Martínez

  An excellent trainer across the whole iOS platform, and also a communicator of everything new in the tech world, clearly and simply, starting from precise details that you can tell he studies in depth. He conveys good sense and curiosity about a range of topics, all of them current and very interesting. All of it, as he says, “that easy and that simple.”

• ✓Adrian Francisco Cervantes Lozano approved the changesstudent

  “The clearest and most complete training in iOS dev. I took the courses on TDD, CI/CD with Xcode Cloud, Machine Learning and Augmented Reality, and I’m completely satisfied with what I learned from maestro Julio.”

• ✓Eduardo González approved the changesstudent

  “A while ago I took a course on iOS security with Julio César at AppleCoding. I learned things I hadn’t seen anywhere else, and the course topic isn’t an easy one to find.”

  Read the full review · Eduardo González

  A while ago I took a course on iOS security with Julio César at AppleCoding. I learned things I hadn’t seen anywhere else, and the course topic isn’t an easy one to find. I think he knows a good deal about what he teaches, and I’ve been able to apply many of the concepts in my apps. I recommend his courses.

• ✓Pablo Siegrist Montejo approved the changesstudent

  “Julio is a great professional. At Atenzia we hired Apple Coding Academy to run an internal training program focused on growing the company’s iOS mobile app development.”

  Read the full review · Pablo Siegrist Montejo

  Julio is a great professional. At Atenzia we hired Apple Coding Academy to run an internal training program focused on growing the company’s iOS mobile app development. The result was very productive training, with Julio as the instructor. Julio has a long track record in iOS development, and it’s been a pleasure to be able to count on his experience.

• ✓Álvaro Ortí Moreno approved the changesstudent

  “I’ve taken both the App Development with SwiftUI 3, Combine and Async-Await course and the Xcode Cloud and/or open source TDD, Continuous Integration and Delivery course.”

  Read the full review · Álvaro Ortí Moreno

  I’ve taken both the App Development with SwiftUI 3, Combine and Async-Await course and the Xcode Cloud and/or open source TDD, Continuous Integration and Delivery course. I found both very interesting, above all because they give you the chance to apply the new features in a very dynamic and enjoyable way. I’m sure the other modules will be just as good or better. Highly recommended.

• ✓Rodrigo Extremo Tabarés approved the changesstudent

  “I’ve taken several courses with Julio as the instructor, and the level of dedication, knowledge and detail he pours into his classes is very hard to find.”

  Read the full review · Rodrigo Extremo Tabarés

  I’ve taken several courses with Julio as the instructor, and the level of dedication, knowledge and detail he pours into his classes is very hard to find. He’s a highly qualified and approachable professional, and it’s always a pleasure to be in one of his classes. His courses don’t just skim the surface; they go deep into the subject to give you a professional perspective, so the level of knowledge you reach by the end is impressive.

• ✓Aldair Cosetito Coral approved the changesstudent

  “Julio César is someone with very solid experience and knowledge of the whole Mac ecosystem.”

  Read the full review · Aldair Cosetito Coral

  Julio César is someone with very solid experience and knowledge of the whole Mac ecosystem. He knows in detail how the Swift language works; a great teacher who was able to clear up my questions about the “how, when and why” of using many of the features the language offers for iOS development.

• ✓Roberto Gómez approved the changesstudent

  “Besides being passionate about the Apple world and technology, Julio is one of the best Swift instructors in the Spanish-speaking world. I had the chance to take several courses, both online and on Udemy, and the experience was quite good.”

  Read the full review · Roberto Gómez

  Besides being passionate about the Apple world and technology, Julio is one of the best Swift instructors in the Spanish-speaking world. I had the chance to take several courses, both online and on Udemy, and the experience was quite good. The classes are very enjoyable, giving you the guidelines that help you consolidate your knowledge of iOS development. I hope to sign up for one of his new courses soon!

• ✓Diego Doldán Rodríguez approved the changesstudent

  “I took several modules of the 2021 Bootcamp at Apple Coding Academy and had the pleasure of having Julio César Fernández as my teacher.”

  Read the full review · Diego Doldán Rodríguez

  I took several modules of the 2021 Bootcamp at Apple Coding Academy and had the pleasure of having Julio César Fernández as my teacher. A 10-out-of-10 teacher. His way of teaching and the level of detail in his explanations are among the best, no doubt; having him show you where every line of code comes from and the why of every step is essential for learning well. Recommended 110%.

• ✓José Fumanal Quintana approved the changesstudent

  “I’d been looking for iOS development training for a while, and I couldn’t have ended up in a better place than Apple Coding Academy. Very enjoyable live classes, recorded so you can watch them whenever you want.”

  Read the full review · José Fumanal Quintana

  I’d been looking for iOS development training for a while, and I couldn’t have ended up in a better place than Apple Coding Academy. Very enjoyable live classes, recorded so you can watch them whenever you want. You can tell when someone has mastered the subject, because questions always get answered. Thanks so much for the training, Julio!

• ✓David Martín Sáiz approved the changesstudent

  “In my long career as a programmer, I had never received teaching with the depth I got from Julio.”

  Read the full review · David Martín Sáiz

  In my long career as a programmer, I had never received teaching with the depth I got from Julio. He’s a communicative person who draws you in with his explanations; he not only makes things enjoyable and levels the ground for you to learn, but goes far beyond pure theory and interpretation. His knowledge is so broad that he can answer any question on the spot and explain both the specifics and the wider context of why it happens. As a professional, he’s at a very high level in every respect. He does great work on his own projects, on the projects he collaborates on, and with the community: very demanding, completely selfless work that not just anyone is willing to take on, let alone with that quality. Without a doubt, both personally and professionally, crossing paths with Julio and benefiting from the knowledge and passion he puts, in equal parts, into everything he does is absolutely the right decision.

• ✓Víctor Elvira Ávalos approved the changesstudent

  “I’m Víctor Elvira, a freelance iOS developer and one of Julio’s students at Apple Coding Academy, and I’d like to recommend Julio and share my experience.”

  Read the full review · Víctor Elvira Ávalos

  I’m Víctor Elvira, a freelance iOS developer and one of Julio’s students at Apple Coding Academy, and I’d like to recommend Julio and share my experience. For me personally, Julio and his courses changed and propelled my career as an iOS developer, taking it to another level. I met him by chance, and I couldn’t have made a better decision than when I took the plunge with my first course in Swift and SwiftUI. I’ve taken many training courses while learning, but nothing compares to Julio’s courses. He really is the best programming teacher I’ve ever had, a true ace. With him you truly learn to understand the language, the why of many things you used to take for granted, and to leave behind copying and pasting without really understanding what you’re doing, and all of it in an easy, clear and enjoyable way. I couldn’t be more grateful and satisfied to have met Julio and to be his student. Thanks to him and his courses, I’ve been able to take my knowledge of app development for Apple platforms to the next level and become the freelance iOS developer I’d always wanted to be. If you want to learn to develop in Swift, don’t hesitate to do it with the best. Investing in training and knowledge for yourself is the best investment you can make.

• ✓Herbert Rodriguez approved the changesmastery

  “On February 3, a journey began that would mark a before and after in my professional career.”

  Read the full review · Herbert Rodriguez

  On February 3, a journey began that would mark a before and after in my professional career. For more than four months, Monday to Friday, with 4-hour daily sessions, I immersed myself completely in Apple Coding Academy’s Swift Mastery 2025 program. Having finished on June 20, I can say with total conviction that it’s been the biggest and wisest training investment I’ve made, personally and professionally. The depth of the curriculum, the practical approach, the excellence of the teaching team and the commitment to good development practices in Swift for iOS have made this a transformative experience. Accessibility, security, Keychain, testing, artificial intelligence, advanced data management and real code analysis were just some of the areas covered, always with a rigorous, collaborative, professionally oriented methodology. Thanks to this training, I now hold a position as an iOS developer, confident that I have a solid, modern foundation aligned with Apple’s standards. My sincere thanks to the whole *Apple Coding Academy* team for their commitment, their dedication, and for making this step forward in my career possible.

• ✓Fran Sarró Redondo approved the changesmastery

  “Julio is an excellent communicator, teacher and evangelist for Apple platforms. I already knew him from the Apple Coding YouTube channel, and I took the plunge with his academy’s Swift Mastery Program, the most complete course he teaches himself.”

  Read the full review · Fran Sarró Redondo

  Julio is an excellent communicator, teacher and evangelist for Apple platforms. I already knew him from the Apple Coding YouTube channel, and I took the plunge with his academy’s Swift Mastery Program, the most complete course he teaches himself. It was a before and after. Julio doesn’t just have excellent clarity of knowledge; he also knows how to pass it on. He has a knack for explaining abstract, complicated topics in the best possible way. A pleasure to have crossed paths.

• ✓Albert Villanueva Carreras approved the changesmastery

  “I had the privilege of taking Apple Coding Academy’s Swift Mastery Program 2025 under Julio Cesar’s guidance, and I can only recommend it wholeheartedly.”

  Read the full review · Albert Villanueva Carreras

  I had the privilege of taking Apple Coding Academy’s Swift Mastery Program 2025 under Julio Cesar’s guidance, and I can only recommend it wholeheartedly. I’ve been working as an iOS developer for several years, but I felt the need to refresh my knowledge and catch up with the latest technologies. There was no better way to do it than with Julio: he masters Swift at an outstanding level and, even more valuable, he knows how to pass that knowledge on with clarity, passion and endless patience. Every class was carefully structured, combining up-to-date theory with hands-on projects that challenged me to rethink my habits and adopt modern best practices. Thanks to his guidance: I went deeper into Swift fundamentals and current architectures (MVC, MVVM, SwiftUI..). I refined my ability to write clean, scalable code, with an emphasis on unit testing and best practices. I updated my existing apps and published new ones on the App Store, always with his feedback and mentoring. The program is phenomenal: it covers everything you need to boost your iOS career, from the basics to the latest trends, but the real difference is Julio, with his contagious enthusiasm, his ability to simplify the complex and his genuine interest in every student’s success. If you’re looking for a professional who combines technical excellence with exceptional teaching skills, Julio Cesar is without a doubt the right person. I’m deeply grateful for everything I learned and for the inspiration he continues to be in my professional career.

• ✓Ezequiel Rasgido approved the changesmastery

  “I’d like to recommend Julio as an instructor in software development for Apple platforms. I had the privilege of taking two courses with him, one focused on visionOS and another on iOS, and his teaching method has given me great results.”

  Read the full review · Ezequiel Rasgido

  I’d like to recommend Julio as an instructor in software development for Apple platforms. I had the privilege of taking two courses with him, one focused on visionOS and another on iOS, and his teaching method has given me great results. Unlike previous experiences, Julio makes sure you understand the “why” behind every line of code and every concept. His approach isn’t just to teach you to program, but to deeply understand what’s happening at every moment, giving you a solid foundation to keep growing as a developer. This method was a refreshing change from other settings, like university, where I sometimes got pieces of code without much context. Julio is also an incredibly kind person with a great sense of humor, which makes his classes even more enjoyable and motivating. I recommend Julio to anyone who wants to learn development for Apple platforms in a comprehensive, meaningful way. Thanks to his teaching, I’ve been able to apply what I learned in my projects with confidence and clarity, achieving great results. I’ve been so satisfied with his method that I’ve already signed up for a new course with him for 2025. Without a doubt, learning with Julio has been one of the best decisions for my career. And what a good decision it was: having now completed this third course (Swift Mastery Program), I can only recommend him again. It’s incredible how much you can keep learning even after several years of working and believing you have the best practices. In my previous paragraphs I highlighted his way of explaining the why of every line of code and his ability to create an enjoyable, motivating atmosphere. All of that remains intact, but now I can add that his approach evolves at the pace of the ecosystem. In short, three courses later, I keep seeing that Julio doesn’t just teach you to program, but to reason about the software we write. If you’re looking to grow in a solid, consistent way in Apple technologies, studying with him is a safe bet.

• ✓Jose Manuel Lezcano Fresno approved the changesmastery

  “It’s been almost a week since SMP 2025 ended, and honestly, what we went through is a feeling that’s hard to explain; it’s been a real roller coaster of knowledge and wisdom.”

  Read the full review · Jose Manuel Lezcano Fresno

  It’s been almost a week since SMP 2025 ended, and honestly, what we went through is a feeling that’s hard to explain; it’s been a real roller coaster of knowledge and wisdom. Now that it’s over, I’m clearer that the present and future of mobile app development lies in specialization and, without a doubt, the academy is the best place for that!!! And who knows, maybe the latest news about the Swift working group created for Android could open up cross-platform compatibility possibilities for developing on both in the future? Time will tell!!!

• ✓Isaac Rodriguez approved the changesmastery

  “I had the privilege of taking the SPM25 course with Julio César, and the experience was excellent from start to finish.”

  Read the full review · Isaac Rodriguez

  I had the privilege of taking the SPM25 course with Julio César, and the experience was excellent from start to finish. Julio has a perfect command of every topic in the course, from the most basic to the most advanced, always with an up-to-date, clear, structured and very practical approach. What I value most is his ability to explain complex concepts in a way that’s understandable and applicable to the real needs of professional development. Without a doubt, he’s one of the best trainers I’ve come across in Swift development. Highly recommended for anyone who wants to take their skills to the next level.

• ✓Alfonso Alvarez approved the changesmastery

  “What can I say about Julio? To put it very graphically, in line with today’s trends: asking Julio something is like asking an AI that’s already an AGI with no hallucinations, completely honest and always answering natively, with no external libraries, haha. But it’s true, he’s a knowledge machine.”

  Read the full review · Alfonso Alvarez

  What can I say about Julio? To put it very graphically, in line with today’s trends: asking Julio something is like asking an AI that’s already an AGI with no hallucinations, completely honest and always answering natively, with no external libraries, haha. But it’s true, he’s a knowledge machine. On top of that, you can see he’s a born teacher of something he’s mastered 200%, and you can tell he loves it. I’ll also tell you that you need a double mug of ColaCao and a big gulp to handle the flood of information you’re going to get, so much that you need to watch the movie more than once to catch all the nuances and all the info that slipped past you, because he tells you a lot more than it seems; it’s impossible to take it all in at once. For my part, I’m delighted I signed up for his courses, where you also meet people as in love with programming and technology as you are, a program run by aces like Julio, Arturo, Ale, Maria and Jon, a good team to win any match. And if we talk about my classmates, in my case real machines, eager to learn and share their wisdom. Delighted a thousand percent. Thanks so much, my friend.

• ✓Carlos Xavier Carvajal Villegas approved the changesmastery

  “Having a role model like Julio as my teacher in my training in development for Apple platforms was a privilege.”

  Read the full review · Carlos Xavier Carvajal Villegas

  Having a role model like Julio as my teacher in my training in development for Apple platforms was a privilege. Beyond teaching Swift or architectures like MVVM and MVC, Julio conveys a way of thinking about and building software with judgment, quality and an eye to the future; you can feel the passion he has for this. His approach goes beyond code: from day one he pushes us to understand the why of every technical decision, to follow good practices, and to stay up to date on topics like artificial intelligence, secure development and native design following the HIG. Thanks to his guidance, I not only gained solid technical knowledge but also a rigorous, professional working methodology. Without a doubt, Julio is one of those teachers who leave a mark on their students.

• ✓Marc García Teodoro approved the changesmastery

  “In the world of programming there’s a false fast track: copying and pasting without thinking, always repeating the same actions, and trusting that an AI will fix the errors for us. Julio steers completely clear of that approach.”

  Read the full review · Marc García Teodoro

  In the world of programming there’s a false fast track: copying and pasting without thinking, always repeating the same actions, and trusting that an AI will fix the errors for us. Julio steers completely clear of that approach. He draws a clear line between “churning out code” and developing with judgment. Every great house starts from good foundations, and Julio is exceptional at helping build that base of knowledge that gives you the confidence to face new challenges and technologies. As a trainer, he’s always up to date on the latest developments in the industry. He pushes us to try leading-edge tools and methodologies, but without ever losing the critical eye and rigor that should come with anything new. From my time as a student, I take away a huge amount of technical knowledge I didn’t have before, but above all, a way of working based on effort and consistency.

• ✓Miguel Monllau Monfort approved the changesmastery

  “I’ve had the opportunity to take part in several training programs throughout my career, and I can say with complete conviction that the one taught by Julio is on another level.”

  Read the full review · Miguel Monllau Monfort

  I’ve had the opportunity to take part in several training programs throughout my career, and I can say with complete conviction that the one taught by Julio is on another level. His ability as a trainer is exceptional: he not only has a deep command of the subject, but knows how to convey it in a clear, rigorous and motivating way. Julio puts constant emphasis on truly understanding the code, on good development practices and on using native tools efficiently. He also always works with the latest updates to the ecosystem and follows Apple’s official recommendations closely, which ensures training that is current, relevant and directly applicable. The level of the content is high, but thanks to his teaching methodology and the excellent atmosphere he creates in class, the learning experience is as enriching as it is stimulating. Without a doubt, a benchmark in training.

• ✓Oleg Tverdyy Tereshchenko approved the changescompany

  “I highly recommend Julio César as an excellent instructor of Swift, Apple’s language.”

  Read the full review · Oleg Tverdyy Tereshchenko

  I highly recommend Julio César as an excellent instructor of Swift, Apple’s language. His ability to teach Swift concepts is exceptional, which allowed me to learn and develop skills in the language efficiently. Julio César can explain complex concepts clearly and concisely, which helped me understand the nuances of Swift. He also provides a large number of useful resources for practice during classes. If you’re interested in learning Swift or improving your skills in the language, I definitely recommend Julio César as your instructor.

• ✓Juan Soria Gallego approved the changescompany

  “If you need to keep up with everything new in Swift, Julio’s courses are what you need. I’ve already attended several on different topics, and they’ve helped me stay current and not get stuck in the past.”

  Read the full review · Juan Soria Gallego

  If you need to keep up with everything new in Swift, Julio’s courses are what you need. I’ve already attended several on different topics, and they’ve helped me stay current and not get stuck in the past. SwiftUI, Combine, Async-Await… Thank you, Julio, for your effort and dedication to spreading knowledge of Apple 🙂

• ✓Yago de Martín López approved the changescompany

  “As an educator, he’s without a doubt one of the names to keep in mind, nationally and professionally. We definitely received excellent training from him, tailored to us, and it’s benefiting our company in its day-to-day work.”

• ✓Alberto Díaz Díaz approved the changescompany

  “Julio is, without a doubt, the greatest Spanish-speaking expert on the Apple ecosystem.”

  Read the full review · Alberto Díaz Díaz

  Julio is, without a doubt, the greatest Spanish-speaking expert on the Apple ecosystem. Whether it’s to find out what’s coming to Apple devices, the improvements in the next versions of those devices’ operating systems, or to learn the best practices for native app development. On that last point I can speak from experience, since I’ve taken several courses taught by Julio and couldn’t be more satisfied. Courses with complete examples, live, and always with the chance to ask about any question or situation. What’s more, these courses are always up to date. Julio is always the first to write an article or make a podcast about anything new in the Apple ecosystem.

• ✓Eduard Calero Rovira approved the changescompany

  “Julio César is a trainer with broad experience. His knowledge of Apple systems is very deep and wide-ranging.”

  Read the full review · Eduard Calero Rovira

  Julio César is a trainer with broad experience. His knowledge of Apple systems is very deep and wide-ranging. He makes a real effort in his courses to make sure you understand the why of things; he doesn’t just show techniques, but makes sure they’re well understood and gives them meaning and motivation. He’s also an approachable person who tries to explain things in an enjoyable way and to answer every question. In my view, he’s the best iOS trainer in the Spanish-speaking world today.

• 
  

  OrthoKit: Orthodontic App

  Evolved Orthodontics

  Medical

  OrthoKit helps you organize your daily work as an orthodontist.

  ★ 5 · 52 ratings

  View on the App Store · OrthoKit: Orthodontic App
• 
  

  HopUp

  Victor Elvira Avalos

  Food & Drink

  HopUp is a social beer platform designed for people who want to discover, enjoy and share beer in a smarter way.

  View on the App Store · HopUp
• 
  

  OnFactu

  Ruben Gonzalez

  Business

  OnFactu is a native Mac invoicing app for freelancers and small businesses in Spain.

  View on the App Store · OnFactu
• 
  

  Inédito: Disposable Camera

  Juan Ferrera Sala

  Photo & Video

  Inédito turns your iPhone into a disposable camera.

  View on the App Store · Inédito: Disposable Camera

Where the reviews come from

Reviews published by their authors on LinkedIn. They’re shown shortened here; the full version is under “Read the full review.” Reviews written in Spanish have been translated into English.