# 我爱写字 四年级下册 手机版 vs 小优AI练字

The clearest difference is in-app purchases: 小优AI练字 at none against 我爱写字 四年级下册 手机版's 5. 小优AI练字 also leads on ads (none vs shown) and update cadence (every 2 months vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 我爱写字 四年级下册 手机版 sells 5 one-off in-app purchases. 小优AI练字 asks for nothing beyond the download.

我爱写字 四年级下册 手机版 ships an update every 7 months, 小优AI练字 every 2 months. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 我爱写字 四年级下册 手机版 | 小优AI练字 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Size | 204 MB | 322 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dalian Realsys Co., Ltd.](https://appshunter.io/developer/528235289) | [UBTECH ROBOTICS CORP](https://appshunter.io/developer/975970176) |

## What reviewers say

### 我爱写字 四年级下册 手机版

[App page](https://appshunter.io/ios/app/id788404886)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 取消全部广告 | $1.99 | one-time |
| 取消人教版4年级下册广告 | $1.99 | one-time |
| 取消北师大版4年级下册广告 | $1.99 | one-time |
| 取消语文S版4年级下册广告 | $1.99 | one-time |
| 取消苏教版4年级下册广告 | $1.99 | one-time |


### 小优AI练字

[App page](https://appshunter.io/ios/app/ai/id1571900640)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 我爱写字 四年级下册 手机版 free?

我爱写字 四年级下册 手机版 is free to download, with in-app purchases available.

### Is 小优AI练字 free?

小优AI练字 is free to download, with no in-app purchases.

### Do 我爱写字 四年级下册 手机版 or 小优AI练字 have ads?

我爱写字 四年级下册 手机版 shows ads; 小优AI练字 does not.

### Which is updated more often, 我爱写字 四年级下册 手机版 or 小优AI练字?

我爱写字 四年级下册 手机版 ships an update every 7 months, and 小优AI练字 every 2 months. Most recently, 我爱写字 四年级下册 手机版 was updated on October 11, 2026 and 小优AI练字 on October 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.*