# U空间 vs 信锐锐灵

The clearest difference is ads: U空间 at none against 信锐锐灵's shown. On price, update cadence, 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空间 ships an update every 2 months, 信锐锐灵 every 4 months. The most recent releases landed on September 16, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | U空间 | 信锐锐灵 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 50 MB | 53 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [RUIJIE NETWORKS CO., LTD.](https://appshunter.io/developer/580051080) | [Shenzhen Sundray Technologies Co.,Ltd.](https://appshunter.io/developer/1120655348) |

## What reviewers say

### U空间

[App page](https://appshunter.io/ios/app/u/id1603172202)

**In-app purchases:** none


### 信锐锐灵

[App page](https://appshunter.io/ios/app/id6443997698)

**In-app purchases:** none


## Frequently asked questions

### Is U空间 free?

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

### Is 信锐锐灵 free?

信锐锐灵 is free to download, with no in-app purchases.

### Do U空间 or 信锐锐灵 have ads?

信锐锐灵 shows ads; U空间 does not.

### Which is updated more often, U空间 or 信锐锐灵?

U空间 ships an update every 2 months, and 信锐锐灵 every 4 months. Most recently, U空间 was updated on September 16, 2026 and 信锐锐灵 on September 6, 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.*