# Wuff vs App Rechenrakete 20

The clearest difference is price: App Rechenrakete 20 at Free against Wuff's $0.99. App Rechenrakete 20 also leads on update cadence (every 6 weeks vs every 10 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

App Rechenrakete 20 is free to download; Wuff costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wuff ships an update every 10 months, App Rechenrakete 20 every 6 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Wuff | App Rechenrakete 20 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Size | 35 MB | 59 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beate Tomulla](https://appshunter.io/developer/1492995333) | [Sandra Seiwert](https://appshunter.io/developer/1695078525) |

## What reviewers say

### Wuff

[App page](https://appshunter.io/ios/app/wuff-projekt/id1492995334)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### App Rechenrakete 20

[App page](https://appshunter.io/ios/app/app-rechenrakete-20/id6760218073)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wuff free?

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

### Is App Rechenrakete 20 free?

App Rechenrakete 20 is free to download, with no in-app purchases.

### Do Wuff or App Rechenrakete 20 have ads?

Neither Wuff nor App Rechenrakete 20 shows ads.

### Which is updated more often, Wuff or App Rechenrakete 20?

Wuff ships an update every 10 months, and App Rechenrakete 20 every 6 weeks. Most recently, Wuff was updated on October 25, 2026 and App Rechenrakete 20 on October 28, 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.*