# NextApp_ECS vs B51

The clearest difference is iOS requirement: B51 at 11.0 against NextApp_ECS's 13.0. On price, ads, in-app purchases and device support 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 | NextApp_ECS | B51 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 50 MB | 116 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Mahmoud Mostafa Abdelfatah Mostafa](https://appshunter.io/developer/1688861460) | [Code Brew Labs](https://appshunter.io/developer/646360749) |

## What reviewers say

### NextApp_ECS

[App page](https://appshunter.io/ios/app/nextapp-ecs/id6449401732)

**In-app purchases:** none


### B51

[App page](https://appshunter.io/ios/app/b51/id6477941075)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is NextApp_ECS free?

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

### Is B51 free?

B51 is free to download, with no in-app purchases.

### Do NextApp_ECS or B51 have ads?

Neither NextApp_ECS nor B51 shows ads.

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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.*