Comparison

Kadmia vs JavaScript Champ

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive coding challenges
  • Gamified learning approach
  • Focus on programming fundamentals
  • Active learning methods
  • Daily progress tracking
  • Debugging practice game
Features
Read 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.**

About

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.

Highlights
  • Interactive JavaScript exercises
  • Beginner to advanced tutorials
  • Interview preparation questions
  • Offline access
  • Gamified progress tracking
  • Practical programming challenges
Features
Read 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

Kadmia4 screens
JavaScript Champ4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. JavaScript Champ sells 1 one-off in-app purchase. Kadmia asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Kadmia ships an update every 6 months, JavaScript Champ fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 4 level
Kadmia versus JavaScript Champ: the parameters behind the verdict, then further details
ParameterKadmiaJavaScript Champ
PriceFreeFree
Rating5.0 (1 ratings)5.0 (3 ratings)
Number of ratings13 — better
Update frequencyEvery 6 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size31 MB16 MB
Age rating4+4+
DeveloperKadmia LLCYoan Enchev

Customer experience

Kadmia

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

JavaScript Champ

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kadmia

No in-app purchases

1 purchases

JavaScript Champ

One-time1
  • JavaScript Champ Premium$12.99

Questions

Is Kadmia free?
Kadmia is free to download, with no in-app purchases.
Is JavaScript Champ free?
JavaScript Champ is free to download, with in-app purchases available.
Which has better reviews, Kadmia or JavaScript Champ?
Kadmia and JavaScript Champ are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.
Do Kadmia or JavaScript Champ have ads?
JavaScript Champ shows ads; Kadmia does not.
Which is updated more often, Kadmia or JavaScript Champ?
Kadmia ships an update every 6 months, and JavaScript Champ fortnightly. Most recently, Kadmia was updated on October 27, 2026 and JavaScript Champ on October 24, 2026.

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