# IIITBooks vs AudioBookSync

The clearest difference is in-app purchases: IIITBooks at none against AudioBookSync's 1. IIITBooks also leads on iOS requirement (11.0 vs 18.6). AudioBookSync's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads and device support there is nothing between them.

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

IIITBooks ships an update every 4 months, AudioBookSync every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | IIITBooks | AudioBookSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/iiitbooks/id1238362578/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 39 MB | 12 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [International Institute of Islamic Thought](https://appshunter.io/developer/1238362577) | [Hans-Peter Jordi](https://appshunter.io/developer/1879027494) |

## What reviewers say

### IIITBooks

[App page](https://appshunter.io/ios/app/iiitbooks/id1238362578)

Access and read academic eBooks from the International Institute of Islamic Thought on your iPhone or iPad. Browse over 680 open-access publications and journal issues in multiple languages, with options for audiobooks and customizable reading settings.

**Highlights:** Access IIIT publications and journals, Bilingual English/Arabic interface, Over 680 open-access titles, Audiobook playback and read-along, Customizable ePub reader, Search by title, author, price, date, Sample eBooks for free

**Features:** macOS Compatibility

**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 IIITBooks free?

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

### Is AudioBookSync free?

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

### Do IIITBooks or AudioBookSync have ads?

Neither IIITBooks nor AudioBookSync shows ads.

### Which is updated more often, IIITBooks or AudioBookSync?

IIITBooks ships an update every 4 months, and AudioBookSync every 2 weeks. Most recently, IIITBooks was updated on October 24, 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.*