# AidePen练字 vs LeftThenRight

The clearest difference is in-app purchases: AidePen练字 at none against LeftThenRight's 3. AidePen练字 also leads on iOS requirement (12.0 vs 16.4). LeftThenRight's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. LeftThenRight sells 3 in-app purchases, starting at $3.99 per month. AidePen练字 asks for nothing beyond the download.

AidePen练字 ships an update every 2 months, LeftThenRight weekly. Both last shipped on October 10, 2026.

## The numbers

| Metric | AidePen练字 | LeftThenRight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 350 MB | 123 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [UBTECH ROBOTICS CORP](https://appshunter.io/developer/975970176) | [Shanghai Wueryishi Information Technology Co., Ltd.](https://appshunter.io/developer/6786962709) |

## What reviewers say

### AidePen练字

[App page](https://appshunter.io/ios/app/aidepen/id1627204672)

**Features:** macOS Compatibility

**In-app purchases:** none


### LeftThenRight

[App page](https://appshunter.io/ios/app/leftthenright/id6786962707)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| 6 Months | $9.99 | per 6 months |
| Yearly | $12.99 | per year |


## Frequently asked questions

### Is AidePen练字 free?

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

### Is LeftThenRight free?

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

### Do AidePen练字 or LeftThenRight have ads?

Neither AidePen练字 nor LeftThenRight shows ads.

### Which is updated more often, AidePen练字 or LeftThenRight?

AidePen练字 ships an update every 2 months, and LeftThenRight weekly. Most recently, AidePen练字 was updated on October 10, 2026 and LeftThenRight on October 10, 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.*