# FinnBook vs Duo Reader

The clearest difference is in-app purchases: Duo Reader at none against FinnBook's 2. Duo Reader also leads on iOS requirement (17.6 vs 26.0). FinnBook's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. FinnBook sells 2 in-app purchases, starting at $1.99 per month. Duo Reader asks for nothing beyond the download.

FinnBook ships an update every 4 days, Duo Reader every 6 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | FinnBook | Duo Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duo-reader/id6815597778/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 6 days |
| Size | 38 MB | 95 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maziar Rezvani](https://appshunter.io/developer/937664407) | [LeoStudio Global](https://appshunter.io/developer/1700204948) |

## What reviewers say

### FinnBook

[App page](https://appshunter.io/ios/app/finnbook-epub-and-ebook-reader/id6770285856)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FinnBook Pro | $1.99 | per month |
| FinnBook Pro | $19.99 | per year |


### Duo Reader

[App page](https://appshunter.io/ios/app/duo-reader/id6815597778)

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

**In-app purchases:** none


## Frequently asked questions

### Is FinnBook free?

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

### Is Duo Reader free?

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

### Do FinnBook or Duo Reader have ads?

Duo Reader shows ads; FinnBook does not.

### Which is updated more often, FinnBook or Duo Reader?

FinnBook ships an update every 4 days, and Duo Reader every 6 days. Most recently, FinnBook was updated on October 31, 2026 and Duo Reader on October 31, 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.*