# Zisun无尘空调 vs 逆时岁

The clearest difference is iOS requirement: Zisun无尘空调 at 13.0 against 逆时岁's 15. On price, update cadence, 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.

Zisun无尘空调 ships an update every 5 weeks, 逆时岁 every 3 weeks. The most recent releases landed on October 17, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Zisun无尘空调 | 逆时岁 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 17 MB | 16 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Zaisheng Purifying Equipment Co., Ltd.](https://appshunter.io/developer/1798897518) | [北京正心数智科技有限公司](https://appshunter.io/developer/1809628458) |

## What reviewers say

### Zisun无尘空调

[App page](https://appshunter.io/ios/app/zisun/id6742537079)

**Features:** macOS Compatibility

**In-app purchases:** none


### 逆时岁

[App page](https://appshunter.io/ios/app/id6744863592)

**In-app purchases:** none


## Frequently asked questions

### Is Zisun无尘空调 free?

Zisun无尘空调 is free to download, with no in-app purchases.

### Is 逆时岁 free?

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

### Do Zisun无尘空调 or 逆时岁 have ads?

Neither Zisun无尘空调 nor 逆时岁 shows ads.

### Which is updated more often, Zisun无尘空调 or 逆时岁?

Zisun无尘空调 ships an update every 5 weeks, and 逆时岁 every 3 weeks. Most recently, Zisun无尘空调 was updated on October 17, 2026 and 逆时岁 on October 30, 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.*