SwipeJS vs Learn Kotlin | KotlinPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SwipeJS
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Want to improve your JavaScript skills while solving tricky coding puzzles? SwipeJS offers an interactive way to learn JavaScript by answering thought-provoking quiz questions. Whether you’re studying, sharpening your problem-solving skills, or preparing for job interviews, this app has you covered. How It Works? • Read a coding challenge on a flashcard and choose the correct console.log output. • Instantly see explanations to understand the logic behind the code. • Swipe through questions to learn in a dynamic, interactive way. • Practice JavaScript concepts at different difficulty levels. Who Is It For? • Students and beginners looking to deepen their JavaScript understanding. • Frontend developers preparing for coding interviews. • Experienced programmers testing their skills with advanced JavaScript tricks. SwipeJS covers essential topics like the Event Loop, closures, hoisting, this, Promises, async/await, type coercion, and more. Learn JavaScript the smart way—swipe, solve, and master JS. Download SwipeJS and start your journey today!
Learn Kotlin | KotlinPad
Master the Kotlin programming language with interactive lessons, progress tracking, and quizzes. This app offers a structured learning path for beginners and experienced developers alike, with a clean interface and integrated help resources.
- Interactive lessons
- Progress tracking
- Search functionality
- Help Center integration
- Quizzes and challenges
- Personalized learning path
- Visual progress indicators
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**Learn Kotlin Programming – Your Guide to Kotlin Development** Start learning Kotlin with a structured and easy-to-follow learning experience designed to help you understand programming concepts, strengthen your coding knowledge, and track your learning progress. Whether you're exploring Kotlin for the first time or reviewing important programming concepts, Learn Kotlin provides an organized way to study, practice, and improve your understanding. **LEARN KOTLIN STEP BY STEP** Explore Kotlin programming through organized lessons that make learning more accessible and manageable. Study essential programming concepts, develop your understanding of Kotlin syntax, and progress through learning materials at your own pace. **STRUCTURED PROGRAMMING LESSONS** Follow an organized learning experience designed to help you stay focused. • Explore Kotlin programming lessons • Study concepts through structured learning content • Navigate topics with ease • Learn at a comfortable pace • Build your programming knowledge progressively **TEST YOUR KNOWLEDGE WITH QUIZZES** Reinforce what you've learned through interactive quizzes. Review programming concepts, answer questions, and evaluate your understanding as you continue your Kotlin learning journey. Quizzes help you revisit important information and identify topics that may need additional attention. **TRACK YOUR LEARNING PROGRESS** Stay informed about your learning journey with a dedicated progress section. • View your overall learning progress • Keep track of completed lessons • Follow your course completion percentage • Review your learning achievements • Stay focused on your learning goals **FIND YOUR NEXT LESSON** Continue exploring Kotlin with an organized lesson experience. Browse available learning materials, discover what to study next, and move through your lessons without unnecessary complexity. **A CLEAN AND SIMPLE LEARNING EXPERIENCE** Learn Kotlin features an intuitive interface designed to make studying programming concepts easier. The organized layout helps you focus on lessons, quizzes, and learning progress while keeping navigation straightforward. **LEARN AT YOUR OWN PACE** Programming takes practice and consistency. Learn Kotlin gives you the flexibility to explore lessons, review concepts, and test your understanding at a pace that works for you. Whether you have a few minutes to review a topic or want to spend more time studying Kotlin, you can follow your own learning journey. **WHO IS LEARN KOTLIN FOR?** Learn Kotlin is suitable for: • Beginners interested in Kotlin programming • Students exploring programming concepts • Learners reviewing Kotlin fundamentals • Anyone interested in developing Kotlin knowledge • Programming enthusiasts who prefer structured lessons **WHY CHOOSE LEARN KOTLIN?** • Focused Kotlin programming content • Organized, easy-to-follow lessons • Interactive knowledge quizzes • Learning progress tracking • Simple and intuitive navigation • Flexible, self-paced learning **START YOUR KOTLIN LEARNING JOURNEY** Build your understanding of Kotlin programming through structured lessons, knowledge checks, and progress tracking. Explore Kotlin concepts, review what you've learned, and continue improving your programming knowledge one lesson at a time. Download Learn Kotlin and start learning today.
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Verdict
The clearest difference is price: SwipeJS at Free against Learn Kotlin | KotlinPad's $2.99. SwipeJS also leads on update cadence (every 3 days vs every 12 months). Learn Kotlin | KotlinPad's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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
SwipeJS is free to download; Learn Kotlin | KotlinPad costs $2.99 up front. SwipeJS sells 1 one-off in-app purchase. Learn Kotlin | KotlinPad asks for nothing beyond the download.
SwipeJS ships an update every 3 days, Learn Kotlin | KotlinPad every 12 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | SwipeJS | Learn Kotlin | KotlinPad |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 days — better | Every 12 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 26 MB | 73 MB |
| Age rating | 4+ | 9+ |
| Developer | GRIGORI UKRAINSKI | Muhammad Umair |
In-app purchases
SwipeJS
- React.js cards$3.99
Learn Kotlin | KotlinPad
No in-app purchases
Questions
Is SwipeJS free?
Is Learn Kotlin | KotlinPad free?
Do SwipeJS or Learn Kotlin | KotlinPad have ads?
Which is updated more often, SwipeJS or Learn Kotlin | KotlinPad?
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