# 样本管理系统 vs EV

The clearest difference is device support: 样本管理系统 at 2 against EV's —. EV's advantage is iOS requirement (10.0 vs 12.0). 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 | 样本管理系统 | EV |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 9 days | — |
| Size | 38 MB | 832 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [鉴 刘](https://appshunter.io/developer/1420089432) | [美泉 黄](https://appshunter.io/developer/1465544231) |

## What reviewers say

### 样本管理系统

[App page](https://appshunter.io/ios/app/id6467383125)

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

**In-app purchases:** none


### EV

[App page](https://appshunter.io/ios/app/ev-das/id6504085940)

**In-app purchases:** none


## Frequently asked questions

### Is 样本管理系统 free?

样本管理系统 is free to download, with no in-app purchases.

### Is EV free?

EV 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.*