# PDF Studio ‎ vs Raven

The clearest difference is update cadence: PDF Studio ‎ at every 2 days against Raven's every 2 months. PDF Studio ‎ also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, 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.

PDF Studio ‎ ships an update every 2 days, Raven every 2 months. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | PDF Studio ‎ | Raven |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 46 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Hrishi Suthar](https://appshunter.io/developer/1660005858) | [William Hieber](https://appshunter.io/developer/6779472200) |

## What reviewers say

### PDF Studio ‎

[App page](https://appshunter.io/ios/app/pdf-studio/id6757748573)

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

**In-app purchases:** none


### Raven

[App page](https://appshunter.io/ios/app/raven-hidden-messages/id6779472198)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Studio ‎ free?

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

### Is Raven free?

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

### Do PDF Studio ‎ or Raven have ads?

Neither PDF Studio ‎ nor Raven shows ads.

### Which is updated more often, PDF Studio ‎ or Raven?

PDF Studio ‎ ships an update every 2 days, and Raven every 2 months. Most recently, PDF Studio ‎ was updated on October 23, 2026 and Raven on October 28, 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.*