# 龟小兔写字HD vs 小优AI练字

The clearest difference is update cadence: 龟小兔写字HD at fortnightly against 小优AI练字's every 2 months. 小优AI练字's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 14.4). On price, 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.

龟小兔写字HD ships an update fortnightly, 小优AI练字 every 2 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 龟小兔写字HD | 小优AI练字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/hd/id1478580134/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 28 MB | 322 MB |
| Requires iOS | 14.4 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Guixiaotu Science & Technology Company Limited](https://appshunter.io/developer/1478580133) | [UBTECH ROBOTICS CORP](https://appshunter.io/developer/975970176) |

## What reviewers say

### 龟小兔写字HD

[App page](https://appshunter.io/ios/app/hd/id1478580134)

This app offers online calligraphy lessons for children, focusing on standard hard-pen writing techniques. It features instruction from a renowned calligraphy master, aiming to help children develop excellent handwriting skills from home.

**Highlights:** Online hard-pen calligraphy courses, Standardized character writing, Instruction from a master calligrapher, Designed for children, Accessible from home

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 龟小兔写字HD free?

龟小兔写字HD is free to download, with no in-app purchases.

### Is 小优AI练字 free?

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

### Do 龟小兔写字HD or 小优AI练字 have ads?

Neither 龟小兔写字HD nor 小优AI练字 shows ads.

### Which is updated more often, 龟小兔写字HD or 小优AI练字?

龟小兔写字HD ships an update fortnightly, and 小优AI练字 every 2 months. Most recently, 龟小兔写字HD was updated on October 15, 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.*