# Theodore AI vs LibreraX

The clearest difference is in-app purchases: Theodore AI at none against LibreraX's 1. Theodore AI also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. LibreraX sells 1 in-app purchase, starting at $0.99 per month. Theodore AI asks for nothing beyond the download.

## The numbers

| Metric | Theodore AI | LibreraX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/librerax-epub-reader-pdf/id6815773197/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 57 MB | 112 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Benjamin Brynildsen](https://appshunter.io/developer/1484123813) | [Ivan Ivanenko](https://appshunter.io/developer/6777951014) |

## What reviewers say

### Theodore AI

[App page](https://appshunter.io/ios/app/theodore-ai/id6762391179)

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

**In-app purchases:** none


### LibreraX

[App page](https://appshunter.io/ios/app/librerax-epub-reader-pdf/id6815773197)

This application allows you to read a wide variety of book formats, including EPUB and PDF. Customize your reading experience with adjustable fonts, backgrounds, and reading modes. Organize your library, add notes, and even listen to books with text-to-speech functionality.

**Highlights:** Supports EPUB, PDF, MOBI, and more, Customizable fonts, backgrounds, and themes, Add bookmarks and notes, Text-to-Speech (TTS) functionality, Organize library with tags and favorites, Search free books in OPDS Catalogs

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LibreraX Pro | $0.99 | per month |


## Frequently asked questions

### Is Theodore AI free?

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

### Is LibreraX free?

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

### Do Theodore AI or LibreraX have ads?

LibreraX shows ads; Theodore AI does not.

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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.*