# Fast PDF Reader & Converter vs OKEN PDF Scanner

The clearest difference is rating: OKEN PDF Scanner at 5.0 against Fast PDF Reader & Converter's 4.3. OKEN PDF Scanner also leads on update cadence (every 2 weeks vs every 2 months). Fast PDF Reader & Converter's advantage is in-app purchases (none vs 3) and ratings volume (19 vs 1). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. OKEN PDF Scanner sells 3 in-app purchases, starting at $2.99 per 7 days. Fast PDF Reader & Converter asks for nothing beyond the download.

OKEN PDF Scanner holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Fast PDF Reader & Converter has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Fast PDF Reader & Converter ships an update every 2 months, OKEN PDF Scanner every 2 weeks. The most recent releases landed on August 18, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Fast PDF Reader & Converter | OKEN PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (19 ratings)](https://appshunter.io/ios/app/fast-pdf-reader-and-converter/id6477148802/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oken-pdf-scanner-pdf-editor/id6744842630/reviews)** |
| Number of ratings | **19** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 54 MB | 41 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Truong Nguyen](https://appshunter.io/developer/1602339577) | [Pratigya Gulani](https://appshunter.io/developer/1804235941) |

## What reviewers say

### Fast PDF Reader & Converter

[App page](https://appshunter.io/ios/app/fast-pdf-reader-and-converter/id6477148802)

Easily transform photos into professional PDF documents. Convert various image formats, customize settings, and organize your files with a sleek, user-friendly interface. Ideal for students, professionals, and anyone needing to create neat PDF albums.

**Highlights:** Image to PDF conversion, Supports JPEG, PNG, and more, Customizable PDF settings, Fast and efficient processing, Folder-based organization, User-friendly design

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

**In-app purchases:** none


### OKEN PDF Scanner

[App page](https://appshunter.io/ios/app/oken-pdf-scanner-pdf-editor/id6744842630)

This app offers comprehensive PDF management, allowing you to create, edit, secure, and organize your documents. Features include text and image editing, password protection, merging, splitting, and digital signatures. Optimize file sizes for easy sharing and storage.

**Highlights:** PDF creation from images/documents, Advanced text and image editing, Password protection and unlocking, Merge, split, and rearrange pages, Compress files without quality loss, Add digital signatures

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $5.99 | per month |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is Fast PDF Reader & Converter free?

Fast PDF Reader & Converter is free to download, with no in-app purchases.

### Is OKEN PDF Scanner free?

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

### Which has better reviews, Fast PDF Reader & Converter or OKEN PDF Scanner?

OKEN PDF Scanner is rated higher. Fast PDF Reader & Converter averages 4.3 out of 5 from 19 ratings, while OKEN PDF Scanner averages 5.0 from 1 ratings.

### Do Fast PDF Reader & Converter or OKEN PDF Scanner have ads?

Both Fast PDF Reader & Converter and OKEN PDF Scanner show ads.

### Which is updated more often, Fast PDF Reader & Converter or OKEN PDF Scanner?

Fast PDF Reader & Converter ships an update every 2 months, and OKEN PDF Scanner every 2 weeks. Most recently, Fast PDF Reader & Converter was updated on August 18, 2026 and OKEN PDF Scanner on September 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.*