# Mental Arithmetic Professional vs PRGRSS

The clearest difference is in-app purchases: PRGRSS at none against Mental Arithmetic Professional's 1. PRGRSS also leads on update cadence (every 5 weeks vs every 12 months) and iOS requirement (16.4 vs 26.0). Mental Arithmetic Professional's advantage is ads (none vs shown). On price and device support there is nothing between them.

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

Mental Arithmetic Professional ships an update every 12 months, PRGRSS every 5 weeks. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Mental Arithmetic Professional | PRGRSS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 5 weeks** |
| Size | 11 MB | 109 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [GRITNESS UG (haftungsbeschraenkt)](https://appshunter.io/developer/1576016386) |

## 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 |


### PRGRSS

[App page](https://appshunter.io/ios/app/prgrss-training-simply/id6450148831)

**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 PRGRSS free?

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

### Do Mental Arithmetic Professional or PRGRSS have ads?

PRGRSS shows ads; Mental Arithmetic Professional does not.

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

Mental Arithmetic Professional ships an update every 12 months, and PRGRSS every 5 weeks. Most recently, Mental Arithmetic Professional was updated on October 15, 2026 and PRGRSS on October 4, 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.*