# Learn Kotlin vs DSA Master

The clearest difference is rating: Learn Kotlin at 5.0 against DSA Master's 4.2. Learn Kotlin also leads on in-app purchases (none vs 1) and ads (none vs shown). DSA Master's advantage is update cadence (weekly vs every 3 months) and ratings volume (35 vs 1). On price and device support there is nothing between them.

Both are free to download. DSA Master sells 1 one-off in-app purchase. Learn Kotlin asks for nothing beyond the download.

Learn Kotlin holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: DSA Master has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of Learn Kotlin's written reviews are positive against 13% of DSA Master's, so the app with the better star average is not the one people write more warmly about.

Learn Kotlin ships an update every 3 months, DSA Master weekly. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Learn Kotlin | DSA Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-kotlin-onepercent/id1560955321/reviews)** | [4.2 (35 ratings)](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683/reviews) |
| Number of ratings | 1 | **35** |
| Positive reviews | 0.0% of reviews | **12.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 150 MB |
| Requires iOS | **12.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OnePercent](https://appshunter.io/developer/1536020418) | [Alok Singh](https://appshunter.io/developer/1508795536) |

## What reviewers say

### Learn Kotlin

[App page](https://appshunter.io/ios/app/learn-kotlin-onepercent/id1560955321)

Master Kotlin programming from beginner to advanced concepts with interactive lessons, quizzes, and demo programs. Prepare for interviews with real Q&A. Available on all platforms for free.

**Highlights:** Comprehensive Kotlin lessons, Interview preparation Q&A, Interactive quizzes, Demo programs for visualization, Clear syntax explanations, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases:** none


### DSA Master

[App page](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683)

Master algorithms and data structures with interactive visualizations, executable code, and practice challenges. Supports multiple programming languages and offers progress tracking for technical interview preparation.

**Highlights:** Interactive visualizations, Live code execution, Multi-language support, Practice challenges, Progress tracking, Algorithm animations

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Learn Kotlin free?

Learn Kotlin is free to download, with no in-app purchases.

### Is DSA Master free?

DSA Master is free to download, with in-app purchases available.

### Which has better reviews, Learn Kotlin or DSA Master?

Learn Kotlin is rated higher. Learn Kotlin averages 5.0 out of 5 from 1 ratings, while DSA Master averages 4.2 from 35 ratings.

### Do Learn Kotlin or DSA Master have ads?

DSA Master shows ads; Learn Kotlin does not.

### Which is updated more often, Learn Kotlin or DSA Master?

Learn Kotlin ships an update every 3 months, and DSA Master weekly. Most recently, Learn Kotlin was updated on October 1, 2026 and DSA Master on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*