# Mental Math vs Kopfrechnen Trainer

The clearest difference is in-app purchases: Kopfrechnen Trainer at none against Mental Math's 2. Mental Math's advantage is update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mental Math sells 2 in-app purchases, starting at $3.99 per month. Kopfrechnen Trainer asks for nothing beyond the download.

Mental Math ships an update weekly, Kopfrechnen Trainer every 2 weeks. The most recent releases landed on September 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Mental Math | Kopfrechnen Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/mental-math-focus-trainer/id6757860865/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 11 MB | 92 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Denys Kotenko](https://appshunter.io/developer/1869320256) | [Alban Nelaj](https://appshunter.io/developer/1894156643) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-focus-trainer/id6757860865)

Enhance concentration and mental speed with daily mental math exercises. This app offers a minimalist approach to brain training, helping you prepare for deep work, studying, or important meetings. Track your progress and customize sessions to improve focus and cognitive clarity.

**Highlights:** Performance testing, Mental math training (add, subtract, multiply, divide), Customizable exercises, Progress tracking, Minimalist design, Focus improvement

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly: Focus & Mental Math | $3.99 | per month |
| Pro Yearly: Focus & Mental Math | $17.99 | per year |


### Kopfrechnen Trainer

[App page](https://appshunter.io/ios/app/kopfrechnen-trainer/id6764520128)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Math free?

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

### Is Kopfrechnen Trainer free?

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

### Do Mental Math or Kopfrechnen Trainer have ads?

Neither Mental Math nor Kopfrechnen Trainer shows ads.

### Which is updated more often, Mental Math or Kopfrechnen Trainer?

Mental Math ships an update weekly, and Kopfrechnen Trainer every 2 weeks. Most recently, Mental Math was updated on September 23, 2026 and Kopfrechnen Trainer on September 14, 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.*