# 安全口令 vs zTrust OTP

The clearest difference is device support: 安全口令 at 2 against zTrust OTP's —. On price, in-app purchases and iOS requirement 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 | 安全口令 | zTrust OTP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Size | 7 MB | 6 MB |
| Requires iOS | **9.0** | 10.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [北京芯盾时代科技有限公司](https://appshunter.io/developer/1305542379) | [北京指掌易科技有限公司](https://appshunter.io/developer/1149823074) |

## What reviewers say

### 安全口令

[App page](https://appshunter.io/ios/app/id1543819081)

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

**In-app purchases:** none


### zTrust OTP

[App page](https://appshunter.io/ios/app/ztrust-otp/id1587637779)

**In-app purchases:** none


## Frequently asked questions

### Is 安全口令 free?

安全口令 is free to download, with no in-app purchases.

### Is zTrust OTP free?

zTrust OTP 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.*