# Undulib vs Booken

The clearest difference is monetization model: Booken at free against Undulib's paid. Undulib's advantage is rating (4.5 vs 4.0) and ratings volume (29 vs 2). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Undulib holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Undulib has 29 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 83% of Undulib's written reviews are positive against 80% of Booken's.

Undulib ships an update monthly, Booken every 2 months. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Undulib | Booken |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (29 ratings)](https://appshunter.io/ios/app/undulib/id1024718755/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/booken/id6550895937/reviews) |
| Number of ratings | **29** | 2 |
| Positive reviews | **83.3% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 26 MB | 24 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Charles Butler](https://appshunter.io/developer/1024718754) | [Riley Brookins](https://appshunter.io/developer/1704731895) |

## What reviewers say

### Undulib

[App page](https://appshunter.io/ios/app/undulib/id1024718755)

This app is a dedicated audio player designed for audiobook and audio drama enthusiasts. It allows users to easily separate their collections and offers advanced playback features like chapter support, dual progress indicators, and a sleep timer.

**Highlights:** Separates audiobooks from audio dramas, Supports embedded chapters, Supports multi-track books, Dual progress indicators (total and chapter), Remembers playback position, Sleep timer, Supports DRM for Audible and iTunes books

**Features:** macOS Compatibility

**In-app purchases:** none


### Booken

[App page](https://appshunter.io/ios/app/booken/id6550895937)

This app provides a simple and efficient way to listen to your audiobook files. It offers features for importing, managing, and tracking your listening progress, with playback controls accessible from your phone and Apple Watch.

**Highlights:** Import own audiobook files, Track listening progress, Mark books as finished, Lock screen playback controls, Apple Watch companion app, Variable scrubbing speed, Adjustable playback speed

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Undulib free?

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

### Is Booken free?

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

### Which has better reviews, Undulib or Booken?

Undulib is rated higher. Undulib averages 4.5 out of 5 from 29 ratings, while Booken averages 4.0 from 2 ratings.

### Do Undulib or Booken have ads?

Neither Undulib nor Booken shows ads.

### Which is updated more often, Undulib or Booken?

Undulib ships an update monthly, and Booken every 2 months. Most recently, Undulib was updated on October 21, 2026 and Booken on October 6, 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.*