# Theodore AI vs Duodecimo

The clearest difference is iOS requirement: Theodore AI at 15.1 against Duodecimo's 26.0. 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.

## The numbers

| Metric | Theodore AI | Duodecimo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/duodecimo/id6824674185/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Daily |
| Monetization | — | Free |
| Size | 57 MB | 532 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Benjamin Brynildsen](https://appshunter.io/developer/1484123813) | [Jay Welshofer](https://appshunter.io/developer/1824870820) |

## 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


### Duodecimo

[App page](https://appshunter.io/ios/app/duodecimo/id6824674185)

Access a vast library of 1,009 classic books for offline reading on your iPhone and iPad. Customize your reading experience with adjustable fonts, spacing, and appearance. Import additional public domain books and utilize helpful reading guides and note-taking features.

**Highlights:** 1,009 classic books included, Offline reading capability, Import from Project Gutenberg, Customizable reading interface, Searchable notes and highlights, Text-to-speech functionality, Reading progress tracking

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Theodore AI free?

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

### Is Duodecimo free?

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

### Do Theodore AI or Duodecimo have ads?

Neither Theodore AI nor Duodecimo shows ads.

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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.*