# B vs ES GUARD

The clearest difference is device support: B at 3 against ES GUARD's —. ES GUARD's advantage is iOS requirement (12.0 vs 15.6). 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 | B | ES GUARD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Size | 44 MB | 42 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [BOE Energy Technology Co., Ltd.](https://appshunter.io/developer/1476777673) | [杭州轻舟科技有限公司](https://appshunter.io/developer/1327203925) |

## What reviewers say

### B

[App page](https://appshunter.io/ios/app/b-isolar/id1476777674)

**Features:** macOS Compatibility

**In-app purchases:** none


### ES GUARD

[App page](https://appshunter.io/ios/app/es-guard/id6503453393)

**In-app purchases:** none


## Frequently asked questions

### Is B free?

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

### Is ES GUARD free?

ES GUARD 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.*