# e勘察 vs 数工通

The clearest difference is update cadence: e勘察 at fortnightly against 数工通's monthly. 数工通's advantage is iOS requirement (10.0 vs 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.

e勘察 ships an update fortnightly, 数工通 monthly. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | e勘察 | 数工通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 45 MB | 48 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [China Jikan Research Institute Of Engineering Investigations And Design, Co., Lt d.](https://appshunter.io/developer/1606692541) | [Wuhan Surveying-Geotechnical Research Institute CO.LTD Of MCC](https://appshunter.io/developer/1524725347) |

## What reviewers say

### e勘察

[App page](https://appshunter.io/ios/app/e/id1606692539)

**Features:** macOS Compatibility

**In-app purchases:** none


### 数工通

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is e勘察 free?

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

### Is 数工通 free?

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

### Do e勘察 or 数工通 have ads?

Neither e勘察 nor 数工通 shows ads.

### Which is updated more often, e勘察 or 数工通?

e勘察 ships an update fortnightly, and 数工通 monthly. Most recently, e勘察 was updated on October 13, 2026 and 数工通 on October 8, 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.*