# Crown Book vs AudioBookSync

The clearest difference is in-app purchases: Crown Book at none against AudioBookSync's 1. Crown Book also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AudioBookSync sells 1 one-off in-app purchase. Crown Book asks for nothing beyond the download.

Crown Book ships an update every 2 days, AudioBookSync every 2 weeks. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Crown Book | AudioBookSync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 2 MB | 12 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Artur Janowicz](https://appshunter.io/developer/1826543860) | [Hans-Peter Jordi](https://appshunter.io/developer/1879027494) |

## What reviewers say

### Crown Book

[App page](https://appshunter.io/ios/app/crown-book/id6751164768)

**Features:** Apple Watch app

**In-app purchases:** none


### AudioBookSync

[App page](https://appshunter.io/ios/app/audiobooksync/id6759492424)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AudioBookSync Pro | $5.99 | one-time |


## Frequently asked questions

### Is Crown Book free?

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

### Is AudioBookSync free?

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

### Do Crown Book or AudioBookSync have ads?

Neither Crown Book nor AudioBookSync shows ads.

### Which is updated more often, Crown Book or AudioBookSync?

Crown Book ships an update every 2 days, and AudioBookSync every 2 weeks. Most recently, Crown Book was updated on October 7, 2026 and AudioBookSync on October 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.*