# Be in charge (Legacy) vs Büttner

The clearest difference is device support: Be in charge (Legacy) at 3 against Büttner's —. Be in charge (Legacy) also leads on iOS requirement (11.0 vs 13.2). 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 | Be in charge (Legacy) | Büttner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 5 months | — |
| Monetization | Free | — |
| Size | 44 MB | 27 MB |
| Requires iOS | **11.0** | 13.2 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Super B b.v.](https://appshunter.io/developer/1255206497) | [DOMETIC MOBILE POWER ITALY S.r.l.](https://appshunter.io/developer/1715492783) |

## What reviewers say

### Be in charge (Legacy)

[App page](https://appshunter.io/ios/app/be-in-charge-legacy/id1255206498)

Monitor your Super B Epsilon battery's performance. Track voltage, current, and state of charge in real-time. Stay informed about your battery's status.

**Highlights:** Battery voltage tracking, Current monitoring, State of charge display, Real-time battery status, Super B Epsilon compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Büttner

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

**In-app purchases:** none


## Frequently asked questions

### Is Be in charge (Legacy) free?

Be in charge (Legacy) 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.*