Kadmia vs JavaScript Champ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kadmia
Learn JavaScript through interactive challenges and games, focusing on fundamental programming principles rather than passive tutorials. Build your coding intuition step-by-step with engaging puzzles and immediate feedback.
- Interactive coding challenges
- Gamified learning approach
- Focus on programming fundamentals
- Active learning methods
- Daily progress tracking
- Debugging practice game
Read full descriptionHide full description
Kadmia – Learn JavaScript With Games Kadmia helps you learn JavaScript by *doing*, not just watching tutorials. Most coding apps focus on passive learning—videos, long explanations, and memorization. Kadmia takes a different approach. Through interactive challenges and games, you actively build your programming intuition step by step. ### Build a Real Foundation Great programmers aren’t made by memorizing syntax. They’re built on strong fundamentals. Kadmia focuses on **first principles** of programming: * Variables and logic * Functions and flow * Problem solving * How code actually works Each concept builds naturally on the previous one, helping you develop skills that compound over time. ### Learn Through Play: Tap the Bug Our signature game, **Tap the Bug**, turns debugging into an engaging challenge. Bugs appear in your code and it's your job to spot and fix them. As you progress, the puzzles become more sophisticated—training your brain to recognize patterns and think like a programmer. It’s fast, fun, and surprisingly addictive. ### Active Learning Beats Passive Watching Instead of endless videos, Kadmia keeps you engaged with: * Interactive coding puzzles * Immediate feedback * Short learning loops * Practice that reinforces real understanding You learn faster because you’re constantly **thinking, experimenting, and solving problems.** ### Designed for Gradual Mastery Programming skill grows through consistent practice. Kadmia is designed for **daily progress**, helping you steadily expand your abilities over time. Whether you're starting from zero or strengthening your fundamentals, Kadmia helps you build the mindset and skills of a real JavaScript developer. Start learning JavaScript the way it was meant to be learned: **actively, playfully, and from first principles.**
JavaScript Champ
Learn JavaScript programming through interactive exercises and tutorials covering basics to advanced topics. Prepare for interviews and build practical programs. Gamified elements help you climb ranks and become a job-ready developer.
- Interactive JavaScript exercises
- Beginner to advanced tutorials
- Interview preparation questions
- Offline access
- Gamified progress tracking
- Practical programming challenges
Read full descriptionHide full description
Learn JavaScript programming via interactive exercises and simple tutorials. The app is suitable for anyone with it's interactive JavaScript programming exercises. Main JavaScript tutorials you'll find: * JavaScript basics - if statements and loops * Advanced JavaScript topics like arrays, matrix, functions and more. * Catchy JavaScript questions to prepare you for interviews. You can make the first steps of starting your career as a JavaScript developer. The JavaScript tutorials and exercises have pretty wide range. This can prepare you for JavaScript interviews. You'll learn anything - from the basics to OOP - Object oriented programming in JavaScript. Make the first steps of becoming a JavaScript developer. All you need is basic JavaScript programming knowledge and your phone/tablet. The app also provides offline access to all of it's JavaScript tutorials. You can learn JavaScript on the go from anywhere. Boost your JavaScript learning experience by climbing ranks. This way you can climb up to the top and become ready for JavaScript programmer job. It doesn't matter if you are a beginner starting his/her JavaScript coding journey or you're advancer learning OOP - Object oriented programming in JavaScript. The app will help you learn all necessary JavaScript programming concepts. It will also let you check if you've learned well JavaScript topic through exercises with feedback. You can build JavaScript problems through challenges solving practical problems. JavaScript is widely used language which can offer you an awesome well paid career as a JavaScript developer. That's why you should add JavaScript programming to your skills. Learn JavaScript PRO to improve your learning experience. * Ad-free experience. Remove any distractions from your JavaScript learning experience. * Unlock puzzles hints * Unlock all challenges and build practical JavaScript programs step by step. * Explanations to all questions. Understand JavaScript concepts via simple and clear explanation. I believe that JavaScript programming needs to be fun. Simple JavaScript tutorials and practical exercises with Gamification UI is the best way to lead you to becoming a JavaScript programmer. Ready to become a JavaScript champ? Download it now! Your feedback and ideas are important. They make me improve the application and boost your JavaScript programming experience. You can reach me at javascript.champ.pro@gmail.com With much Love from the JavaScript Champ dev.
Screenshots
Verdict
The clearest difference is in-app purchases: Kadmia at none against JavaScript Champ's 1. Kadmia also leads on ads (none vs shown). JavaScript Champ's advantage is update cadence (fortnightly vs every 6 months) and ratings volume (3 vs 1). On price, rating, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. JavaScript Champ sells 1 one-off in-app purchase. Kadmia asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Kadmia against 5.0 for JavaScript Champ. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Kadmia ships an update every 6 months, JavaScript Champ fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Kadmia | JavaScript Champ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 6 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Kadmia LLC | Yoan Enchev |
Customer experience
Kadmia
JavaScript Champ
In-app purchases
Kadmia
No in-app purchases
JavaScript Champ
- JavaScript Champ Premium$12.99
Questions
Is Kadmia free?
Is JavaScript Champ free?
Which has better reviews, Kadmia or JavaScript Champ?
Do Kadmia or JavaScript Champ have ads?
Which is updated more often, Kadmia or JavaScript Champ?
Other comparisons















