# RADii Viewer vs PDF Scanner

The clearest difference is in-app purchases: RADii Viewer at none against PDF Scanner's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PDF Scanner sells 1 one-off in-app purchase. RADii Viewer asks for nothing beyond the download.

RADii Viewer ships an update every 3 months, PDF Scanner every 6 weeks. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RADii Viewer | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 129 MB | 14 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Lee](https://appshunter.io/developer/1505307948) | [Kavita Gabani](https://appshunter.io/developer/1563703272) |

## What reviewers say

### RADii Viewer

[App page](https://appshunter.io/ios/app/radii-viewer/id1505325031)

**In-app purchases:** none


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-pdf-maker/id1661602081)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock PDF | $0.99 | one-time |


## Frequently asked questions

### Is RADii Viewer free?

RADii Viewer is free to download, with no in-app purchases.

### Is PDF Scanner free?

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

### Do RADii Viewer or PDF Scanner have ads?

Neither RADii Viewer nor PDF Scanner shows ads.

### Which is updated more often, RADii Viewer or PDF Scanner?

RADii Viewer ships an update every 3 months, and PDF Scanner every 6 weeks. Most recently, RADii Viewer was updated on October 7, 2026 and PDF Scanner on October 9, 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.*