# Rechenfeld vs lehramt.app

The clearest difference is price: lehramt.app at Free against Rechenfeld's $0.99. lehramt.app also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.6). Rechenfeld's advantage is update cadence (every 5 months vs every 25 months). On ads and in-app purchases there is nothing between them.

lehramt.app is free to download; Rechenfeld costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rechenfeld ships an update every 5 months, lehramt.app every 25 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Rechenfeld | lehramt.app |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 25 months |
| Monetization | Paid | — |
| Size | 17 MB | 5 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Christian Urff](https://appshunter.io/developer/415894463) | [LBZ Lehrerberatungszentrum Baden-Wurttemberg GmbH](https://appshunter.io/developer/1646608581) |

## What reviewers say

### Rechenfeld

[App page](https://appshunter.io/ios/app/rechenfeld/id1558366734)

This app provides a visual aid for understanding addition and subtraction within various number ranges. It's designed to help children, especially those with learning difficulties, grasp mathematical concepts through interactive manipulation of virtual objects.

**Highlights:** Visualizes addition and subtraction, Supports number ranges up to 1000, Interactive manipulation of virtual tiles, Helps develop number sense and strategies, Illustrates decimal system concepts, Displays problems on number line and arrow diagrams

**Features:** macOS Compatibility

**In-app purchases:** none


### lehramt.app

[App page](https://appshunter.io/ios/app/lehramtapp/id6443501440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rechenfeld free?

Rechenfeld costs $0.99, with no in-app purchases.

### Is lehramt.app free?

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

### Do Rechenfeld or lehramt.app have ads?

Neither Rechenfeld nor lehramt.app shows ads.

### Which is updated more often, Rechenfeld or lehramt.app?

Rechenfeld ships an update every 5 months, and lehramt.app every 25 months. Most recently, Rechenfeld was updated on October 7, 2026 and lehramt.app on October 10, 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.*