# 掌上文理 vs PP论文查重

The clearest difference is in-app purchases: 掌上文理 at none against PP论文查重's 10. 掌上文理 also leads on iOS requirement (9.0 vs 11.0). PP论文查重's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. PP论文查重 sells 4 one-off in-app purchases. 掌上文理 asks for nothing beyond the download.

掌上文理 ships an update every 3 months, PP论文查重 every 3 weeks. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 掌上文理 | PP论文查重 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 38 MB | 42 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Zhejiang Zhengyuan Zhihui Technology Co.,Ltd.](https://appshunter.io/developer/915266542) | [北京知风科技有限公司](https://appshunter.io/developer/1548901903) |

## What reviewers say

### 掌上文理

[App page](https://appshunter.io/ios/app/id1322925324)

**Features:** macOS Compatibility

**In-app purchases:** none


### PP论文查重

[App page](https://appshunter.io/ios/app/pp/id1548901901)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 论文服务费用 | $49.99 | one-time |
| 论文服务费用 | $59.99 | one-time |
| 论文服务费用 | $69.99 | one-time |
| 论文服务费用 | $79.99 | one-time |


## Frequently asked questions

### Is 掌上文理 free?

掌上文理 is free to download, with no in-app purchases.

### Is PP论文查重 free?

PP论文查重 is free to download, with in-app purchases available.

### Do 掌上文理 or PP论文查重 have ads?

Neither 掌上文理 nor PP论文查重 shows ads.

### Which is updated more often, 掌上文理 or PP论文查重?

掌上文理 ships an update every 3 months, and PP论文查重 every 3 weeks. Most recently, 掌上文理 was updated on September 20, 2026 and PP论文查重 on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*