# Math Maestro vs OSIRIS ROC Mondriaan

The clearest difference is update cadence: OSIRIS ROC Mondriaan at every 3 weeks against Math Maestro's every 17 months. OSIRIS ROC Mondriaan also leads on iOS requirement (11.0 vs 18.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Math Maestro ships an update every 17 months, OSIRIS ROC Mondriaan every 3 weeks. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Math Maestro | OSIRIS ROC Mondriaan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Size | 71 MB | 30 MB |
| Requires iOS | 18.1 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Innoshift B.V.](https://appshunter.io/developer/1779703312) | [CACI bv](https://appshunter.io/developer/961337312) |

## What reviewers say

### Math Maestro

[App page](https://appshunter.io/ios/app/math-maestro/id6741903457)

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

**In-app purchases:** none


### OSIRIS ROC Mondriaan

[App page](https://appshunter.io/ios/app/osiris-roc-mondriaan/id6747710908)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Maestro free?

Math Maestro is free to download, with no in-app purchases.

### Is OSIRIS ROC Mondriaan free?

OSIRIS ROC Mondriaan is free to download, with no in-app purchases.

### Do Math Maestro or OSIRIS ROC Mondriaan have ads?

Neither Math Maestro nor OSIRIS ROC Mondriaan shows ads.

### Which is updated more often, Math Maestro or OSIRIS ROC Mondriaan?

Math Maestro ships an update every 17 months, and OSIRIS ROC Mondriaan every 3 weeks. Most recently, Math Maestro was updated on October 25, 2026 and OSIRIS ROC Mondriaan on October 14, 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.*