# GSP验证 vs zTMS

The clearest difference is iOS requirement: GSP验证 at 9.0 against zTMS's 15.6. On price, update cadence, ads 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.

GSP验证 ships an update fortnightly, zTMS monthly. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | GSP验证 | zTMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 15 MB | 33 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duoxie Information Technologies Co.,Ltd](https://appshunter.io/developer/1098139565) | [Shenzhen ZKS Mobile IOT Tech Co., Ltd.](https://appshunter.io/developer/1296855170) |

## What reviewers say

### GSP验证

[App page](https://appshunter.io/ios/app/gsp/id1289570675)

**In-app purchases:** none


### zTMS

[App page](https://appshunter.io/ios/app/ztms/id1343042775)

**In-app purchases:** none


## Frequently asked questions

### Is GSP验证 free?

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

### Is zTMS free?

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

### Do GSP验证 or zTMS have ads?

Neither GSP验证 nor zTMS shows ads.

### Which is updated more often, GSP验证 or zTMS?

GSP验证 ships an update fortnightly, and zTMS monthly. Most recently, GSP验证 was updated on September 13, 2026 and zTMS on September 10, 2026.

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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.*