# Biblioteca de Arucas vs Thorium Reader

The clearest difference is update cadence: Thorium Reader at every 3 weeks against Biblioteca de Arucas's every 6 months. Biblioteca de Arucas's advantage is iOS requirement (12.0 vs 26.1). 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.

Biblioteca de Arucas ships an update every 6 months, Thorium Reader every 3 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Biblioteca de Arucas | Thorium Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (13 ratings)](https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 12 MB | 46 MB |
| Requires iOS | **12.0** | 26.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [RODRIGUEZ HERNANDEZ JOSE MANUEL](https://appshunter.io/developer/730905129) | [Readium](https://appshunter.io/developer/1232183924) |

## What reviewers say

### Biblioteca de Arucas

[App page](https://appshunter.io/ios/app/biblioteca-de-arucas/id730905126)

**Features:** macOS Compatibility

**In-app purchases:** none


### Thorium Reader

[App page](https://appshunter.io/ios/app/thorium-reader/id6745025189)

Organize all your ebooks, comics, and manga in a single app. Customize your reading experience with adjustable text, fonts, and themes. Listen to audiobooks and zoom into visual content with ease.

**Highlights:** Unified bookshelf for all content, Adjustable text size and spacing, Multiple font options, Text-to-speech audio playback, Zoom for comics and manga, Offline dictionary and translation, Import EPUB, PDF, CBZ files

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

**In-app purchases:** none


## Frequently asked questions

### Is Biblioteca de Arucas free?

Biblioteca de Arucas is free to download, with no in-app purchases.

### Is Thorium Reader free?

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

### Do Biblioteca de Arucas or Thorium Reader have ads?

Neither Biblioteca de Arucas nor Thorium Reader shows ads.

### Which is updated more often, Biblioteca de Arucas or Thorium Reader?

Biblioteca de Arucas ships an update every 6 months, and Thorium Reader every 3 weeks. Most recently, Biblioteca de Arucas was updated on November 6, 2026 and Thorium Reader on November 8, 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.*