# Mental Calculation vs BTV Compagnon

The clearest difference is iOS requirement: Mental Calculation at 11.4 against BTV Compagnon's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Mental Calculation ships an update every 25 months, BTV Compagnon every 18 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Mental Calculation | BTV Compagnon |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 18 months** |
| Monetization | Free | — |
| Size | 7 MB | 135 MB |
| Requires iOS | **11.4** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Frederic Bronner](https://appshunter.io/developer/291929818) | [Mobi.deep](https://appshunter.io/developer/1784357085) |

## What reviewers say

### Mental Calculation

[App page](https://appshunter.io/ios/app/mental-calculation/id765124023)

This game helps you practice mental arithmetic skills throughout the year. It offers a fun and engaging way to improve your math abilities.

**Highlights:** Mental arithmetic practice, Year-round learning, Engaging gameplay, Improves math skills

**Features:** macOS Compatibility

**In-app purchases:** none


### BTV Compagnon

[App page](https://appshunter.io/ios/app/btv-compagnon/id6739230668)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mental Calculation free?

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

### Is BTV Compagnon free?

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

### Do Mental Calculation or BTV Compagnon have ads?

Neither Mental Calculation nor BTV Compagnon shows ads.

### Which is updated more often, Mental Calculation or BTV Compagnon?

Mental Calculation ships an update every 25 months, and BTV Compagnon every 18 months. Most recently, Mental Calculation was updated on October 7, 2026 and BTV Compagnon on October 2, 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.*