# PDF Converter vs QR Studio KBR

The clearest difference is in-app purchases: QR Studio KBR at none against PDF Converter's 3. QR Studio KBR also leads on iOS requirement (13.0 vs 17.0). PDF Converter's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. PDF Converter sells 3 in-app purchases, starting at $9.99 per 7 days. QR Studio KBR asks for nothing beyond the download.

PDF Converter ships an update every 5 days, QR Studio KBR every 4 days. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PDF Converter | QR Studio KBR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-converter-docs-scanner/id6773582437/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 34 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Komal Gangani](https://appshunter.io/developer/1854018266) | [KPR PREMIUM MOTOR CARS SL](https://appshunter.io/developer/6779337159) |

## What reviewers say

### PDF Converter

[App page](https://appshunter.io/ios/app/pdf-converter-docs-scanner/id6773582437)

This app transforms your mobile device into a powerful PDF scanner and editor. Convert various file types to and from PDF, perform OCR for searchable text, and secure your documents with passwords and encryption. It offers a comprehensive suite of tools for managing, signing, and annotating PDFs without needing a desktop.

**Highlights:** Mobile document scanning with auto edge detection, On-device OCR for searchable text, Convert to/from PDF and multiple file formats, Merge, split, reorder, and compress PDFs, Sign, fill forms, and annotate documents, Password protection and redaction, iCloud sync and share sheet integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Weekly | $9.99 | per 7 days |
| Yearly | $49.99 | per year |


### QR Studio KBR

[App page](https://appshunter.io/ios/app/qr-studio-kbr/id6781860403)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Converter free?

PDF Converter is free to download, with in-app purchases available.

### Is QR Studio KBR free?

QR Studio KBR is free to download, with no in-app purchases.

### Do PDF Converter or QR Studio KBR have ads?

QR Studio KBR shows ads; PDF Converter does not.

### Which is updated more often, PDF Converter or QR Studio KBR?

PDF Converter ships an update every 5 days, and QR Studio KBR every 4 days. Most recently, PDF Converter was updated on September 11, 2026 and QR Studio KBR on September 10, 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.*