# 刺猬实用工具 vs U

The clearest difference is update cadence: U at monthly against 刺猬实用工具's every 23 months. U also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, 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.

刺猬实用工具 ships an update every 23 months, U monthly. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 刺猬实用工具 | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/u-nas-mobile/id6449585673/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Monthly** |
| Monetization | — | Free |
| Size | 9 MB | 130 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [飞 边](https://appshunter.io/developer/1624997944) | [Ningbo Wanyou Electronic Technology Co., Ltd.](https://appshunter.io/developer/1228091713) |

## What reviewers say

### 刺猬实用工具

[App page](https://appshunter.io/ios/app/id6444861180)

**Features:** macOS Compatibility

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-nas-mobile/id6449585673)

This mobile tool provides a handheld platform for managing U-NAS devices. It allows for backing up phone albums and contacts, AI-powered photo organization, creating and sharing photo albums, and viewing NAS videos with a poster wall interface. Advanced features like Docker and cloud sync are also supported.

**Highlights:** U-NAS device management, Phone album and contact backup, AI photo classification, Photo album creation and sharing, NAS video poster wall, Docker support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 刺猬实用工具 free?

刺猬实用工具 is free to download, with no in-app purchases.

### Is U free?

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

### Do 刺猬实用工具 or U have ads?

Neither 刺猬实用工具 nor U shows ads.

### Which is updated more often, 刺猬实用工具 or U?

刺猬实用工具 ships an update every 23 months, and U monthly. Most recently, 刺猬实用工具 was updated on October 27, 2026 and U on November 3, 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.*