# Rechenflow Mental Math — Mental math practice

> Mental math practice (iPhone/iPad app by Christian Hermann.)

- Source: https://appshunter.io/ios/app/rechenflow-mental-math/id6776089329 (this page in markdown: same URL + `.md`)
- Developer: [Christian Hermann](https://appshunter.io/developer/1882361365)
- Category: Games, Trivia
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 111 MB
- Languages: American English, French (France), German (Germany), European Spanish
- Released: 2026-07-02
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/rechenflow-mental-math/id6776089329/reviews.md

## What is Rechenflow Mental Math?

Rechenflow is a mental arithmetic game for short, focused rounds: daily challenge, operation-based training, sprint mode, pro levels and estimate tasks.

GAME IDEA
All problems are generated directly on your device. Practice practical calculation skills - addition, subtraction, multiplication, division, percentages and squares - without ads, subscriptions or medical effectiveness claims.

INCLUDED
- Daily challenge with streak
- Training by operation
- Timed sprint mode
- Estimation as true/false and order-of-magnitude checks
- Pro mode with higher levels
- XP, stats and history
- Local storage
- Clear, distraction-free interface

UNLOCK ONCE
- All modes
- All operations

No IQ, memory, medical or health claims. No subscription. No ads.


## Version history (last 5 releases)

### 1.4.0 — 2026-08-15

Rechenflow Complete is now directly accessible from the home screen. Purchase and restore handle temporary Store connection issues more reliably, alongside further stability improvements.

### 1.3.2 — 2026-08-05

Improved display on current devices, plus technical optimizations for stability and performance.

### 1.3.0 — 2026-07-23

Improved purchase restoration and cloud sign-in. Full version access now remains available across sign-in and sign-out. Improved settings and stability.

### 1.2.0 — 2026-07-19

Sprint rounds now reliably run for the full 60 seconds. Estimate tasks, English wording, number and time formats, and layouts with large text have also been improved.

### 1.1.7 — 2026-07-14

Verbesserungen bei Stabilität und Bedienung sowie kleinere Fehlerbehebungen.

## More apps by Christian Hermann

- [Hufschlag - Riding Badge](https://appshunter.io/ios/app/hufschlag-riding-badge/id6772564828)
- [Plant Protection Study](https://appshunter.io/ios/app/plant-protection-study/id6772565173)
- [Firearms Knowledge Compact](https://appshunter.io/ios/app/firearms-knowledge-compact/id6772994944)
- [NolaCycle Period Tracker](https://appshunter.io/ios/app/nolacycle-period-tracker/id6773782026)
- [RitualNest Habit Tracker](https://appshunter.io/ios/app/ritualnest-habit-tracker/id6773807251)
- [Waylino Logic Puzzle](https://appshunter.io/ios/app/waylino-logic-puzzle/id6775400227)

All apps by Christian Hermann: https://appshunter.io/developer/1882361365

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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 2026-08-22.*