# PowerXtreme PRO vs Büttner

The clearest difference is device support: PowerXtreme PRO at 3 against Büttner's —. Büttner's advantage is iOS requirement (13.2 vs 15.1). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | PowerXtreme PRO | Büttner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 8 months | — |
| Size | 38 MB | 27 MB |
| Requires iOS | 15.1 | **13.2** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Emergoplus](https://appshunter.io/developer/1095549157) | [DOMETIC MOBILE POWER ITALY S.r.l.](https://appshunter.io/developer/1715492783) |

## What reviewers say

### PowerXtreme PRO

[App page](https://appshunter.io/ios/app/powerxtreme-pro/id1597082457)

**In-app purchases:** none


### Büttner

[App page](https://appshunter.io/ios/app/buttner/id6471507273)

**In-app purchases:** none


## Frequently asked questions

### Is PowerXtreme PRO free?

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

### Is Büttner free?

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

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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.*