# PDF Scanner vs WunderLINQ DFU

The clearest difference is review sentiment: PDF Scanner at 100% against WunderLINQ DFU's 0%. PDF Scanner also leads on update cadence (every 10 days vs every 7 months). WunderLINQ DFU's advantage is iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PDF Scanner ships an update every 10 days, WunderLINQ DFU every 7 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | PDF Scanner | WunderLINQ DFU |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 7 months |
| Monetization | Free | Free |
| Size | 95 MB | 1 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iDroid App](https://appshunter.io/developer/1033189582) | [Black Box Embedded, LLC](https://appshunter.io/developer/1410462733) |

## What reviewers say

### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-ocr-scan-app/id1286272447)

Turn your iPhone into a portable scanner to capture documents, receipts, and IDs. Extract text with OCR and organize your scans with folders. Export files as PDFs or JPEGs and share them easily.

**Highlights:** Smart document edge detection, OCR text extraction, Multi-page PDF creation, Organize scans with folders, Export as PDF or JPEG, Share via cloud services

**In-app purchases:** none


### WunderLINQ DFU

[App page](https://appshunter.io/ios/app/wunderlinq-dfu/id1441840346)

This utility app delivers Over-The-Air firmware updates for compatible hardware. It ensures your devices are running the latest software for optimal performance and security.

**Highlights:** Over-the-Air firmware updates, WunderLINQ hardware support, Latest software delivery, Performance optimization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Scanner free?

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

### Is WunderLINQ DFU free?

WunderLINQ DFU is free to download, with no in-app purchases.

### Do PDF Scanner or WunderLINQ DFU have ads?

Neither PDF Scanner nor WunderLINQ DFU shows ads.

### Which is updated more often, PDF Scanner or WunderLINQ DFU?

PDF Scanner ships an update every 10 days, and WunderLINQ DFU every 7 months. Most recently, PDF Scanner was updated on November 3, 2026 and WunderLINQ DFU on November 2, 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.*