# 数工通 vs CDHM Tester

The clearest difference is iOS requirement: 数工通 at 10.0 against CDHM Tester's 12.0. 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.

数工通 ships an update monthly, CDHM Tester every 5 weeks. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 数工通 | CDHM Tester |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 48 MB | 30 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Surveying-Geotechnical Research Institute CO.LTD Of MCC](https://appshunter.io/developer/1524725347) | [深圳雷诺智能技术有限公司](https://appshunter.io/developer/1764868485) |

## What reviewers say

### 数工通

[App page](https://appshunter.io/ios/app/id6469686035)

**Features:** macOS Compatibility

**In-app purchases:** none


### CDHM Tester

[App page](https://appshunter.io/ios/app/cdhm-tester/id6667100044)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 数工通 free?

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

### Is CDHM Tester free?

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

### Do 数工通 or CDHM Tester have ads?

Neither 数工通 nor CDHM Tester shows ads.

### Which is updated more often, 数工通 or CDHM Tester?

数工通 ships an update monthly, and CDHM Tester every 5 weeks. Most recently, 数工通 was updated on October 8, 2026 and CDHM Tester on October 5, 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.*