# 知知丫丫 vs 蒙语AI输入法

The clearest difference is in-app purchases: 知知丫丫 at none against 蒙语AI输入法's 3. 知知丫丫 also leads on iOS requirement (12.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 蒙语AI输入法 sells 3 one-off in-app purchases. 知知丫丫 asks for nothing beyond the download.

知知丫丫 ships an update every 2 weeks, 蒙语AI输入法 weekly. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 知知丫丫 | 蒙语AI输入法 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 113 MB | 57 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Zhizhi Yaya Technology Co., Ltd](https://appshunter.io/developer/1725079838) | [YouTeacher Inc.](https://appshunter.io/developer/423093933) |

## What reviewers say

### 知知丫丫

[App page](https://appshunter.io/ios/app/id6475754527)

**Features:** macOS Compatibility

**In-app purchases:** none


### 蒙语AI输入法

[App page](https://appshunter.io/ios/app/ai/id6757733508)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1500 积分 | $1.49 | one-time |
| 3000 积分 | $2.99 | one-time |
| 6000 积分 | $5.99 | one-time |


## Frequently asked questions

### Is 知知丫丫 free?

知知丫丫 is free to download, with no in-app purchases.

### Is 蒙语AI输入法 free?

蒙语AI输入法 is free to download, with in-app purchases available.

### Do 知知丫丫 or 蒙语AI输入法 have ads?

Neither 知知丫丫 nor 蒙语AI输入法 shows ads.

### Which is updated more often, 知知丫丫 or 蒙语AI输入法?

知知丫丫 ships an update every 2 weeks, and 蒙语AI输入法 weekly. Most recently, 知知丫丫 was updated on September 20, 2026 and 蒙语AI输入法 on September 14, 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.*