# Bibooks vs Duri

The clearest difference is update cadence: Duri at daily against Bibooks's every 4 weeks. Duri also leads on device support (3 vs 1). Bibooks's advantage is iOS requirement (17 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Bibooks sells 1 one-off in-app purchase and Duri sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Bibooks ships an update every 4 weeks, Duri daily. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bibooks | Duri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duri-book-and-pdf-reader/id6814625727/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Daily** |
| Monetization | — | Freemium |
| Size | 2 MB | 247 MB |
| Requires iOS | **17** | 26.0 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [ilyas YILMAZ](https://appshunter.io/developer/1756521574) | [NEERAJ SHARMA](https://appshunter.io/developer/6792976772) |

## What reviewers say

### Bibooks

[App page](https://appshunter.io/ios/app/bibooks/id6742707824)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sınırsız | $1.99 | one-time |


### Duri

[App page](https://appshunter.io/ios/app/duri-book-and-pdf-reader/id6814625727)

This app reads your EPUBs, PDFs, comics, and text files with realistic page-turning animations. It offers text-to-speech, note-taking, highlighting, and PDF annotation features. Your data stays on your device, and Pro features are available via a one-time purchase.

**Highlights:** Realistic page-turning animations, Text-to-speech with multiple voices, Highlighting and note-taking, PDF annotation tools, Customizable reading themes and fonts, iCloud sync for Pro users, Widgets and Apple Watch remote

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duri Pro | $9.99 | one-time |


## Frequently asked questions

### Is Bibooks free?

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

### Is Duri free?

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

### Do Bibooks or Duri have ads?

Neither Bibooks nor Duri shows ads.

### Which is updated more often, Bibooks or Duri?

Bibooks ships an update every 4 weeks, and Duri daily. Most recently, Bibooks was updated on October 25, 2026 and Duri 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.*