# Muuolf vs 低空亿

The clearest difference is iOS requirement: Muuolf at 13.0 against 低空亿's 15.6. 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.

Muuolf ships an update every 4 days, 低空亿 weekly. The most recent releases landed on October 16, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Muuolf | 低空亿 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Size | 41 MB | 137 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [程 文](https://appshunter.io/developer/1711706067) | [河北中启之芯科技有限公司](https://appshunter.io/developer/1833453617) |

## What reviewers say

### Muuolf

[App page](https://appshunter.io/ios/app/muuolf/id6469270053)

**Features:** macOS Compatibility

**In-app purchases:** none


### 低空亿

[App page](https://appshunter.io/ios/app/id6748329049)

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

**In-app purchases:** none


## Frequently asked questions

### Is Muuolf free?

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

### Is 低空亿 free?

低空亿 is free to download, with no in-app purchases.

### Do Muuolf or 低空亿 have ads?

Neither Muuolf nor 低空亿 shows ads.

### Which is updated more often, Muuolf or 低空亿?

Muuolf ships an update every 4 days, and 低空亿 weekly. Most recently, Muuolf was updated on October 16, 2026 and 低空亿 on October 20, 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.*