# FocusMath vs Calcul Mental Challenge

The clearest difference is in-app purchases: Calcul Mental Challenge at none against FocusMath's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FocusMath sells 4 in-app purchases, starting at $2.99 per 7 days. Calcul Mental Challenge asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | FocusMath | Calcul Mental Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 37 MB | 196 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HK-TECH](https://appshunter.io/developer/1441516879) | [Laurent BOST](https://appshunter.io/developer/1891585206) |

## What reviewers say

### FocusMath

[App page](https://appshunter.io/ios/app/focusmath/id6759092912)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $7.99 | per month |
| Annual Premium | $24.99 | per year |
| Lifetime Premium | $59.99 | one-time |


### Calcul Mental Challenge

[App page](https://appshunter.io/ios/app/calcul-mental-challenge/id6761807166)

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

**In-app purchases:** none


## Frequently asked questions

### Is FocusMath free?

FocusMath is free to download, with in-app purchases available.

### Is Calcul Mental Challenge free?

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

### Do FocusMath or Calcul Mental Challenge have ads?

Neither FocusMath nor Calcul Mental Challenge shows ads.

### Which is updated more often, FocusMath or Calcul Mental Challenge?

FocusMath ships an update every 4 days, and Calcul Mental Challenge every 4 days. Most recently, FocusMath was updated on October 14, 2026 and Calcul Mental Challenge 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.*