# PDF2Audio vs Castique

The clearest difference is update cadence: Castique at every 2 weeks against PDF2Audio's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF2Audio sells 4 in-app purchases, starting at $9.99 per month and Castique sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

PDF2Audio ships an update every 5 weeks, Castique every 2 weeks. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PDF2Audio | Castique |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 5 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shaozhuang Chen](https://appshunter.io/developer/1692461668) | [Can Ozcan](https://appshunter.io/developer/6785204358) |

## What reviewers say

### PDF2Audio

[App page](https://appshunter.io/ios/app/pdf2audio/id6762536249)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $9.99 | per month |
| Pro Users | $59.99 | per month |
| Basic Plan | $79.99 | per year |
| Pro Users | $499.99 | per year |


### Castique

[App page](https://appshunter.io/ios/app/castique/id6785204356)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 60 Credits | $4.99 | one-time |
| 135 Credits | $9.99 | one-time |
| 219 Credits | $14.99 | one-time |


## Frequently asked questions

### Is PDF2Audio free?

PDF2Audio is free to download, with in-app purchases available.

### Is Castique free?

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

### Do PDF2Audio or Castique have ads?

Neither PDF2Audio nor Castique shows ads.

### Which is updated more often, PDF2Audio or Castique?

PDF2Audio ships an update every 5 weeks, and Castique every 2 weeks. Most recently, PDF2Audio was updated on September 25, 2026 and Castique on September 17, 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.*