# 绵眠 vs Simple Convert

The clearest difference is ads: 绵眠 at none against Simple Convert's shown. 绵眠 also leads on iOS requirement (11.0 vs 15.0). Simple Convert's advantage is update cadence (every 5 days vs every 3 months). On price, 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.

绵眠 ships an update every 3 months, Simple Convert every 5 days. The most recent releases landed on October 14, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 绵眠 | Simple Convert |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 133 MB | 13 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Qianfenzhiyi Information Technology Co., Ltd.](https://appshunter.io/developer/1701362512) | [洪雨 徐](https://appshunter.io/developer/6806095474) |

## What reviewers say

### 绵眠

[App page](https://appshunter.io/ios/app/id6470334085)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Convert

[App page](https://appshunter.io/ios/app/simple-convert-exchange/id6817637342)

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

**In-app purchases:** none


## Frequently asked questions

### Is 绵眠 free?

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

### Is Simple Convert free?

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

### Do 绵眠 or Simple Convert have ads?

Simple Convert shows ads; 绵眠 does not.

### Which is updated more often, 绵眠 or Simple Convert?

绵眠 ships an update every 3 months, and Simple Convert every 5 days. Most recently, 绵眠 was updated on October 14, 2026 and Simple Convert on October 26, 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.*