Comparison

SwipeJS vs Learn Kotlin | KotlinPad

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

Head to head
About

SwipeJS

Features
Read full description

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!

About

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.

Highlights
  • Interactive lessons
  • Progress tracking
  • Search functionality
  • Help Center integration
  • Quizzes and challenges
  • Personalized learning path
  • Visual progress indicators
Features
Read full description

**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.

Screenshots

SwipeJS4 screens
Learn Kotlin | KotlinPad4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
SwipeJS versus Learn Kotlin | KotlinPad: the parameters behind the verdict, then further details
ParameterSwipeJSLearn Kotlin | KotlinPad
PriceFree — better$2.99
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 — better15.6
Further details — not scored
Size26 MB73 MB
Age rating4+9+
DeveloperGRIGORI UKRAINSKIMuhammad Umair

In-app purchases

1 purchases

SwipeJS

One-time1
  • React.js cards$3.99
None

Learn Kotlin | KotlinPad

No in-app purchases

Questions

Is SwipeJS free?
SwipeJS is free to download, with in-app purchases available.
Is Learn Kotlin | KotlinPad free?
Learn Kotlin | KotlinPad costs $2.99, with no in-app purchases.
Do SwipeJS or Learn Kotlin | KotlinPad have ads?
SwipeJS shows ads; Learn Kotlin | KotlinPad does not.
Which is updated more often, SwipeJS or Learn Kotlin | KotlinPad?
SwipeJS ships an update every 3 days, and Learn Kotlin | KotlinPad every 12 months. Most recently, SwipeJS was updated on October 25, 2026 and Learn Kotlin | KotlinPad on October 24, 2026.

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