# U vs 中鋼保全

The clearest difference is update cadence: 中鋼保全 at every 3 weeks against U's every 6 months. U's advantage is iOS requirement (8.0 vs 16.6). 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.

U ships an update every 6 months, 中鋼保全 every 3 weeks. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | U | 中鋼保全 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Size | 3 MB | 111 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [e-Excellence Inc.](https://appshunter.io/developer/389304670) | [中鋼保全股份有限公司](https://appshunter.io/developer/1111498026) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-office-force/id791499955)

**Features:** macOS Compatibility

**In-app purchases:** none


### 中鋼保全

[App page](https://appshunter.io/ios/app/app/id6475139199)

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

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is 中鋼保全 free?

中鋼保全 is free to download, with no in-app purchases.

### Do U or 中鋼保全 have ads?

Neither U nor 中鋼保全 shows ads.

### Which is updated more often, U or 中鋼保全?

U ships an update every 6 months, and 中鋼保全 every 3 weeks. Most recently, U was updated on November 6, 2026 and 中鋼保全 on November 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.*