# Mental Arithmetic Professional — Kopfrechnen

> Kopfrechnen (iPhone/iPad app by Gerhard Lentschik.)

- Source: https://appshunter.io/ios/app/mental-arithmetic-professional/id1477369984 (this page in markdown: same URL + `.md`)
- Developer: [Gerhard Lentschik](https://appshunter.io/developer/629988041)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 11 MB
- Languages: English, German
- Released: 2019-08-28
- Data updated: 2026-08-03
- User reviews in markdown: https://appshunter.io/ios/app/mental-arithmetic-professional/id1477369984/reviews.md

## What is Mental Arithmetic Professional?

Mental Arithmetic Professional is a fun and challenging brain-training game designed to improve your mental calculation skills.

Solve as many math problems as you can within 120 seconds. Every problem is generated randomly and is meant to be solved entirely in your head—no calculator required.
Earn 1 point for every correct answer. Lose 3 points for every incorrect answer. Speed is important, but accuracy is the key to achieving a high score.

When the timer reaches zero, your score is automatically submitted to the international leaderboard. Beat your personal best or compete against players from around the world.

Features
• Randomly generated arithmetic problems
• 120-second challenge mode
• Improves mental math and concentration
• Reward and penalty scoring system
• International leaderboard
• Simple, fast, and addictive gameplay
• Suitable for all ages

Can you become the world's best mental math player?

Good luck!

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Turn off advertising | $1.99 | one-time |



## Version history (last 5 releases)

### 26.0 — 2026-08-03

for iOS 26

### 1.5 — 2023-10-09

New layout and ready for use with the new iPad generation

### 1.4 — 2021-10-08

iPad 9th generation

### 1.3 — 2021-02-28

New Help Screen

### 1.2 — 2019-11-01

Button Restore purchase inserted

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## More apps by Gerhard Lentschik

- [Schnapse](https://appshunter.io/ios/app/schnapse/id629988038)
- [Sudoku Puzzle](https://appshunter.io/ios/app/sudoku-puzzle/id736147060)
- [Quizzen](https://appshunter.io/ios/app/quizzen/id892223989)
- [Domino All Fives](https://appshunter.io/ios/app/domino-all-fives/id908692164)
- [1024 - 2048 - 4096 - 8192](https://appshunter.io/ios/app/1024-2048-4096-8192/id939834038)
- [five  equal](https://appshunter.io/ios/app/five-equal/id946460526)

All apps by Gerhard Lentschik: https://appshunter.io/developer/629988041

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-03.*