# Rechenkönig vs RabenApp Schulversion (2021)

The clearest difference is price: Rechenkönig at $1.99 against RabenApp Schulversion (2021)'s $9.99. RabenApp Schulversion (2021)'s advantage is update cadence (every 8 months vs every 39 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Rechenkönig costs $1.99 and RabenApp Schulversion (2021) $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rechenkönig ships an update every 39 months, RabenApp Schulversion (2021) every 8 months. The most recent releases landed on October 24, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rechenkönig | RabenApp Schulversion (2021) |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 8 months** |
| Monetization | — | Paid |
| Size | 10 MB | 36 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dr. Peter Schmidt](https://appshunter.io/developer/479165203) | [Ernst Klett Verlag GmbH, Stuttgart](https://appshunter.io/developer/751540887) |

## What reviewers say

### Rechenkönig

[App page](https://appshunter.io/ios/app/rechenkonig/id494234897)

**Features:** macOS Compatibility

**In-app purchases:** none


### RabenApp Schulversion (2021)

[App page](https://appshunter.io/ios/app/rabenapp-schulversion-2021/id1574453123)

This app offers interactive math practice for grades 1-4, covering all four school years. It provides immediate feedback on solutions and an evaluation area to track learning progress. Content is aligned with school materials for a seamless learning experience.

**Highlights:** Interactive math practice for grades 1-4, Covers all four school years, Direct feedback on solutions, Learning progress evaluation, Aligned with school materials

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rechenkönig free?

Rechenkönig costs $1.99, with no in-app purchases.

### Is RabenApp Schulversion (2021) free?

RabenApp Schulversion (2021) costs $9.99, with no in-app purchases.

### Do Rechenkönig or RabenApp Schulversion (2021) have ads?

Neither Rechenkönig nor RabenApp Schulversion (2021) shows ads.

### Which is updated more often, Rechenkönig or RabenApp Schulversion (2021)?

Rechenkönig ships an update every 39 months, and RabenApp Schulversion (2021) every 8 months. Most recently, Rechenkönig was updated on October 24, 2026 and RabenApp Schulversion (2021) on November 3, 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.*