# Mental Arithmetic Professional vs Kroftstodl

The clearest difference is in-app purchases: Kroftstodl at none against Mental Arithmetic Professional's 1. Kroftstodl also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

Mental Arithmetic Professional ships an update every 12 months, Kroftstodl every 7 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Mental Arithmetic Professional | Kroftstodl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 7 months** |
| Size | 11 MB | 24 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [ELEPHANTS 5 GmbH](https://appshunter.io/developer/1556078488) |

## 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 |


### Kroftstodl

[App page](https://appshunter.io/ios/app/kroftstodl-mitglieder-app/id1556078486)

**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 Kroftstodl free?

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

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

Neither Mental Arithmetic Professional nor Kroftstodl shows ads.

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

Mental Arithmetic Professional ships an update every 12 months, and Kroftstodl every 7 months. Most recently, Mental Arithmetic Professional was updated on October 25, 2026 and Kroftstodl on October 25, 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.*