# DocScanner：PDF Scanner App vs 毛毛虫

The clearest difference is update cadence: DocScanner：PDF Scanner App at every 3 days against 毛毛虫's monthly. 毛毛虫's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DocScanner：PDF Scanner App sells 3 in-app purchases, starting at $7.99 per 7 days and 毛毛虫 sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

DocScanner：PDF Scanner App ships an update every 3 days, 毛毛虫 monthly. The most recent releases landed on September 8, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | DocScanner：PDF Scanner App | 毛毛虫 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 6 MB | 30 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [广州蜂羽云科技有限公司](https://appshunter.io/developer/1509598490) | [英杰 赵](https://appshunter.io/developer/1868268026) |

## What reviewers say

### DocScanner：PDF Scanner App

[App page](https://appshunter.io/ios/app/docscannerpdf-scanner-app/id6752327246)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $7.99 | per 7 days |
| Monthly subscription | $19.99 | per month |
| Annual subscription | $34.99 | per year |


### 毛毛虫

[App page](https://appshunter.io/ios/app/raz/id6758662742)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员. | $4.99 | per 7 days |
| 半年会员 | $17.99 | per 6 months |
| 年度会员 | $24.99 | per year |


## Frequently asked questions

### Is DocScanner：PDF Scanner App free?

DocScanner：PDF Scanner App is free to download, with in-app purchases available.

### Is 毛毛虫 free?

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

### Do DocScanner：PDF Scanner App or 毛毛虫 have ads?

Neither DocScanner：PDF Scanner App nor 毛毛虫 shows ads.

### Which is updated more often, DocScanner：PDF Scanner App or 毛毛虫?

DocScanner：PDF Scanner App ships an update every 3 days, and 毛毛虫 monthly. Most recently, DocScanner：PDF Scanner App was updated on September 8, 2026 and 毛毛虫 on September 12, 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.*