# DSA Master vs DubCode

DSA Master and DubCode both sit at 4.2 stars, but that hides the real split: 100% of DubCode's written reviews are positive against 13% of DSA Master's. DubCode also leads on ads (none vs shown). DSA Master's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (35 vs 6). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. DSA Master sells 1 one-off in-app purchase and DubCode sells 1 in-app purchase, starting at $64.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.2 for DSA Master against 4.2 for DubCode. That said, the two scores are not equally well evidenced: DSA Master has 35 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 13% of DSA Master's written reviews are positive against 100% of DubCode's.

DSA Master ships an update weekly, DubCode every 5 days. The most recent releases landed on September 7, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | DSA Master | DubCode |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (35 ratings)](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/dubcode-ace-coding-interviews/id6642683714/reviews) |
| Number of ratings | **35** | 6 |
| Positive reviews | 12.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 150 MB | 43 MB |
| Requires iOS | 16.2 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Alok Singh](https://appshunter.io/developer/1508795536) | [Tangible Software LLC](https://appshunter.io/developer/1763534713) |

## What reviewers say

### 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 |


### DubCode

[App page](https://appshunter.io/ios/app/dubcode-ace-coding-interviews/id6642683714)

Prepare for technical interviews with a vast collection of real questions from top tech companies. Practice your answers with AI and gain the confidence to land your dream job. New questions are added daily to keep your skills sharp.

**Highlights:** Thousands of real interview questions, Daily question updates, AI-powered practice answering, Focus on big tech companies, Algorithm and coding practice

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $64.99 | per month |


## Frequently asked questions

### Is DSA Master free?

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

### Is DubCode free?

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

### Which has better reviews, DSA Master or DubCode?

DSA Master is rated higher. DSA Master averages 4.2 out of 5 from 35 ratings, while DubCode averages 4.2 from 6 ratings.

### Do DSA Master or DubCode have ads?

DSA Master shows ads; DubCode does not.

### Which is updated more often, DSA Master or DubCode?

DSA Master ships an update weekly, and DubCode every 5 days. Most recently, DSA Master was updated on September 7, 2026 and DubCode on June 11, 2026.

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