# Mental Arithmetic Professional vs Crowns Gym

The clearest difference is in-app purchases: Crowns Gym at none against Mental Arithmetic Professional's 1. Crowns Gym also leads on update cadence (every 3 months vs every 12 months) and iOS requirement (15.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Mental Arithmetic Professional sells 1 one-off in-app purchase. Crowns Gym asks for nothing beyond the download.

Mental Arithmetic Professional ships an update every 12 months, Crowns Gym every 3 months. The most recent releases landed on November 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Mental Arithmetic Professional | Crowns Gym |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Size | 11 MB | 32 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [CROWNS GYM LTD](https://appshunter.io/developer/1781877796) |

## What reviewers say

### Mental Arithmetic Professional

[App page](https://appshunter.io/ios/app/mental-arithmetic-professional/id1477369984)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Turn off advertising | $1.99 | one-time |


### Crowns Gym

[App page](https://appshunter.io/ios/app/crowns-gym/id6738694173)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Arithmetic Professional free?

Mental Arithmetic Professional is free to download, with in-app purchases available.

### Is Crowns Gym free?

Crowns Gym is free to download, with no in-app purchases.

### Do Mental Arithmetic Professional or Crowns Gym have ads?

Neither Mental Arithmetic Professional nor Crowns Gym shows ads.

### Which is updated more often, Mental Arithmetic Professional or Crowns Gym?

Mental Arithmetic Professional ships an update every 12 months, and Crowns Gym every 3 months. Most recently, Mental Arithmetic Professional was updated on November 7, 2026 and Crowns Gym on October 12, 2026.

---

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