# YuSu输入法 vs boop

The clearest difference is in-app purchases: YuSu输入法 at none against boop's 6. boop's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. boop sells 6 in-app purchases, starting at $3.99 per month. YuSu输入法 asks for nothing beyond the download.

YuSu输入法 ships an update every 2 weeks, boop weekly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | YuSu输入法 | boop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 49 MB | 69 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SafeX Inc.](https://appshunter.io/developer/1845193883) | [HappyBit Tech Co., Ltd.](https://appshunter.io/developer/1740660634) |

## What reviewers say

### YuSu输入法

[App page](https://appshunter.io/ios/app/yusu/id6756220475)

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

**In-app purchases:** none


### boop

[App page](https://appshunter.io/ios/app/boop/id6813406847)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 单词月度会员 | $3.99 | per month |
| 单词季度会员 | $9.99 | per 3 months |
| 月度会员 | $14.99 | per month |
| 单词年度会员 | $19.99 | per year |
| 季度会员 | $39.99 | per 3 months |
| 年度会员 | $59.99 | per year |


## Frequently asked questions

### Is YuSu输入法 free?

YuSu输入法 is free to download, with no in-app purchases.

### Is boop free?

boop is free to download, with in-app purchases available.

### Do YuSu输入法 or boop have ads?

Neither YuSu输入法 nor boop shows ads.

### Which is updated more often, YuSu输入法 or boop?

YuSu输入法 ships an update every 2 weeks, and boop weekly. Most recently, YuSu输入法 was updated on November 5, 2026 and boop on November 9, 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.*