# UBSM vs IIITBooks

The clearest difference is update cadence: UBSM at monthly against IIITBooks's every 4 months. IIITBooks's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UBSM ships an update monthly, IIITBooks every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UBSM | IIITBooks |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | — | Free |
| Size | 52 MB | 39 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xentral Methods](https://appshunter.io/developer/464707106) | [International Institute of Islamic Thought](https://appshunter.io/developer/1238362577) |

## What reviewers say

### UBSM

[App page](https://appshunter.io/ios/app/ubsm/id741995501)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is UBSM free?

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

### Is IIITBooks free?

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

### Do UBSM or IIITBooks have ads?

Neither UBSM nor IIITBooks shows ads.

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

UBSM ships an update monthly, and IIITBooks every 4 months. Most recently, UBSM was updated on October 26, 2026 and IIITBooks 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.*