# Rechentrainer vs immlab

The clearest difference is update cadence: immlab at every 2 weeks against Rechentrainer's every 2 months. Rechentrainer's advantage is iOS requirement (14.2 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rechentrainer ships an update every 2 months, immlab every 2 weeks. The most recent releases landed on June 4, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Rechentrainer | immlab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 7 MB | 49 MB |
| Requires iOS | **14.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nicolai Kummer](https://appshunter.io/developer/1497635656) | [immlab](https://appshunter.io/developer/1773315086) |

## What reviewers say

### Rechentrainer

[App page](https://appshunter.io/ios/app/rechentrainer/id1497635657)

This app offers personalized math practice for all ages, covering addition, subtraction, multiplication, and division. It features customizable difficulty levels, motivational rewards, and progress tracking to make learning enjoyable and effective.

**Highlights:** Personalized arithmetic practice, Customizable difficulty levels, Motivational reward system, Learning progress tracking, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### immlab

[App page](https://appshunter.io/ios/app/immlab/id6736770228)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rechentrainer free?

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

### Is immlab free?

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

### Do Rechentrainer or immlab have ads?

Neither Rechentrainer nor immlab shows ads.

### Which is updated more often, Rechentrainer or immlab?

Rechentrainer ships an update every 2 months, and immlab every 2 weeks. Most recently, Rechentrainer was updated on June 4, 2026 and immlab on September 16, 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.*