# DSA Master vs Harmoniva

The clearest difference is ads: Harmoniva at none against DSA Master's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. DSA Master sells 1 one-off in-app purchase and Harmoniva sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DSA Master | Harmoniva |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (35 ratings)](https://appshunter.io/ios/app/dsa-master-data-and-algorithms/id1672776683/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 150 MB | 55 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alok Singh](https://appshunter.io/developer/1508795536) | [MITHAT CAN TURAN](https://appshunter.io/developer/1834483480) |

## 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 |


### Harmoniva

[App page](https://appshunter.io/ios/app/harmoniva-ear-training/id6806563705)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Harmoniva Premium Weekly | $2.99 | per 7 days |
| Harmoniva Premium Monthly | $3.99 | per month |
| Harmoniva Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is DSA Master free?

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

### Is Harmoniva free?

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

### Do DSA Master or Harmoniva have ads?

DSA Master shows ads; Harmoniva does not.

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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.*