# 买商标 vs 笔神作文批改教师版

The clearest difference is in-app purchases: 买商标 at none against 笔神作文批改教师版's 2. 笔神作文批改教师版's advantage is update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 笔神作文批改教师版 sells 2 one-off in-app purchases. 买商标 asks for nothing beyond the download.

买商标 ships an update every 4 months, 笔神作文批改教师版 monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 买商标 | 笔神作文批改教师版 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 34 MB | 71 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [上海知风者知识产权代理有限公司](https://appshunter.io/developer/1525860965) | [One Pen Sci-tech Co., Ltd.](https://appshunter.io/developer/1498880039) |

## What reviewers say

### 买商标

[App page](https://appshunter.io/ios/app/id1567801362)

**Features:** macOS Compatibility

**In-app purchases:** none


### 笔神作文批改教师版

[App page](https://appshunter.io/ios/app/ai/id6749288364)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI辅导1月会员 | $2.99 | one-time |
| AI辅导一年会员 | $24.99 | one-time |


## Frequently asked questions

### Is 买商标 free?

买商标 is free to download, with no in-app purchases.

### Is 笔神作文批改教师版 free?

笔神作文批改教师版 is free to download, with in-app purchases available.

### Do 买商标 or 笔神作文批改教师版 have ads?

Neither 买商标 nor 笔神作文批改教师版 shows ads.

### Which is updated more often, 买商标 or 笔神作文批改教师版?

买商标 ships an update every 4 months, and 笔神作文批改教师版 monthly. Most recently, 买商标 was updated on November 3, 2026 and 笔神作文批改教师版 on October 30, 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.*