# 睡眠卫士 vs Asun

The clearest difference is update cadence: 睡眠卫士 at every 2 weeks against Asun's every 2 months. 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.

睡眠卫士 ships an update every 2 weeks, Asun every 2 months. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 睡眠卫士 | Asun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 114 MB | 32 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [北京博实联创科技有限公司](https://appshunter.io/developer/899928291) | [Jiangsu Zhongtian Interconnected Technology Co.,Ltd.](https://appshunter.io/developer/1530306730) |

## What reviewers say

### 睡眠卫士

[App page](https://appshunter.io/ios/app/id1227614872)

**Features:** macOS Compatibility

**In-app purchases:** none


### Asun

[App page](https://appshunter.io/ios/app/asun-eam/id6443746041)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 睡眠卫士 free?

睡眠卫士 is free to download, with no in-app purchases.

### Is Asun free?

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

### Do 睡眠卫士 or Asun have ads?

Neither 睡眠卫士 nor Asun shows ads.

### Which is updated more often, 睡眠卫士 or Asun?

睡眠卫士 ships an update every 2 weeks, and Asun every 2 months. Most recently, 睡眠卫士 was updated on October 19, 2026 and Asun 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.*