# CU自动轮询 vs PDF Scanner & Editor

The clearest difference is device support: CU自动轮询 at 3 against PDF Scanner & Editor's 1. CU自动轮询 also leads on iOS requirement (15.0 vs 26.2). On price, update cadence, 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.

CU自动轮询 ships an update every 4 weeks, PDF Scanner & Editor every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | CU自动轮询 | PDF Scanner & Editor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Size | 27 MB | 8 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [广州一屋橘子香国际贸易有限公司](https://appshunter.io/developer/1848768764) | [Metin Karaduman](https://appshunter.io/developer/1289065477) |

## What reviewers say

### CU自动轮询

[App page](https://appshunter.io/ios/app/cu/id6754543482)

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

**In-app purchases:** none


### PDF Scanner & Editor

[App page](https://appshunter.io/ios/app/pdf-scanner-and-editor-sign/id6784251383)

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

**In-app purchases:** none


## Frequently asked questions

### Is CU自动轮询 free?

CU自动轮询 is free to download, with no in-app purchases.

### Is PDF Scanner & Editor free?

PDF Scanner & Editor is free to download, with no in-app purchases.

### Do CU自动轮询 or PDF Scanner & Editor have ads?

Neither CU自动轮询 nor PDF Scanner & Editor shows ads.

### Which is updated more often, CU自动轮询 or PDF Scanner & Editor?

CU自动轮询 ships an update every 4 weeks, and PDF Scanner & Editor every 2 weeks. Most recently, CU自动轮询 was updated on October 24, 2026 and PDF Scanner & Editor on October 24, 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.*