# Calcul Mental Challenge vs Mental Math

The clearest difference is in-app purchases: Calcul Mental Challenge at none against Mental Math's 2. Calcul Mental Challenge also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Mental Math sells 2 one-off in-app purchases. Calcul Mental Challenge asks for nothing beyond the download.

Calcul Mental Challenge ships an update every 4 days, Mental Math fortnightly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Calcul Mental Challenge | Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mental-math-kalc/id6764098294/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 196 MB | 17 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Laurent BOST](https://appshunter.io/developer/1891585206) | [LMT Digital Creations](https://appshunter.io/developer/640455461) |

## What reviewers say

### Calcul Mental Challenge

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

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

**In-app purchases:** none


### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-kalc/id6764098294)

Sharpen your mental math skills with daily practice. This app uses spaced repetition to help you master concepts like fractions, percentages, and algebra. It offers two modes for flexible learning and provides real-life examples of how math is used every day.

**Highlights:** Spaced repetition system (SRS), Covers multiplication, division, fractions, percentages, algebra, Zen and Chrono practice modes, Visible progress tracking, Real-life math examples, Home screen widgets, Customizable reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plan Annuel | $17.99 | one-time |
| Accès à vie | $29.99 | one-time |


## Frequently asked questions

### Is Calcul Mental Challenge free?

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

### Is Mental Math free?

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

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

Neither Calcul Mental Challenge nor Mental Math shows ads.

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

Calcul Mental Challenge ships an update every 4 days, and Mental Math fortnightly. Most recently, Calcul Mental Challenge was updated on October 25, 2026 and Mental Math on October 31, 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.*