# 知了睡眠 vs 云曦

The clearest difference is update cadence: 云曦 at fortnightly against 知了睡眠's every 6 weeks. 云曦 also leads on iOS requirement (11.0 vs 14.0). 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.

知了睡眠 ships an update every 6 weeks, 云曦 fortnightly. The most recent releases landed on October 14, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 知了睡眠 | 云曦 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 22 MB | 47 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [上海诺斯清生物科技有限公司](https://appshunter.io/developer/1610466871) | [SHENZHEN LINGZUN ELECTRONIC TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1645301743) |

## What reviewers say

### 知了睡眠

[App page](https://appshunter.io/ios/app/id1610466869)

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

**In-app purchases:** none


### 云曦

[App page](https://appshunter.io/ios/app/id6443409910)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 知了睡眠 free?

知了睡眠 is free to download, with no in-app purchases.

### Is 云曦 free?

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

### Do 知了睡眠 or 云曦 have ads?

Neither 知了睡眠 nor 云曦 shows ads.

### Which is updated more often, 知了睡眠 or 云曦?

知了睡眠 ships an update every 6 weeks, and 云曦 fortnightly. Most recently, 知了睡眠 was updated on October 14, 2026 and 云曦 on October 27, 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.*