# Java Data Structures & Algo vs Mathix

The clearest difference is in-app purchases: Java Data Structures & Algo at none against Mathix's 3. Mathix's advantage is update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mathix sells 3 in-app purchases, starting at $8.99 per month. Java Data Structures & Algo asks for nothing beyond the download.

Java Data Structures & Algo ships an update every 2 months, Mathix every 5 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Java Data Structures & Algo | Mathix |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 70 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Emma Michel](https://appshunter.io/developer/6816377766) |

## What reviewers say

### Java Data Structures & Algo

[App page](https://appshunter.io/ios/app/java-data-structures-and-algo/id6756706722)

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

**In-app purchases:** none


### Mathix

[App page](https://appshunter.io/ios/app/mathix/id6816377764)

This app offers daily, short math practice sessions designed for consistent learning. It focuses on mental calculations and spaced repetition to reinforce understanding, with personalized feedback and progress tracking. All content is available offline and without ads.

**Highlights:** Daily 5-minute math sessions, Spaced repetition learning, Personalized feedback on errors, Offline functionality, Progress tracking via iCloud or file export, Targeted content for different academic levels

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mathix+ | $8.99 | per month |
| Mathix+ | $34.99 | per year |
| Mathix+ annuel | $34.99 | per year |


## Frequently asked questions

### Is Java Data Structures & Algo free?

Java Data Structures & Algo is free to download, with no in-app purchases.

### Is Mathix free?

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

### Do Java Data Structures & Algo or Mathix have ads?

Neither Java Data Structures & Algo nor Mathix shows ads.

### Which is updated more often, Java Data Structures & Algo or Mathix?

Java Data Structures & Algo ships an update every 2 months, and Mathix every 5 days. Most recently, Java Data Structures & Algo was updated on November 9, 2026 and Mathix on October 31, 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.*