Undulib vs Booken
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Undulib
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.
- 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
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The audiobook player for audiodrama enthusiast. Keep your audiobook's separated from your audio drama collection. It's as easy as adding #audiodrama to the comments in iTunes. Supports embedded chapters and multi-track books. Two progress indicators, one for the total length and another for chapter length. Remembers playback position Includes a sleep timer Uses iTunes to manage your media and obeys sort metadata such as "Sort Title" Supports Audible and iTunes books with DRM (iOS 8 does not support DRM chapters) Works with external headset or car stereo controls If you're not interested in audiodramas Undulib is also an excellent audiobook player. Listen Smarter. Listen with Undulib!
Booken
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.
- 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
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A lightweight and easy to use player for your audiobook files. Manage your files - Import your own files straight into the app - Manage and see the progress of the books you've listened to - Mark books as finished Listening features - Control playback directly from the lock screen/control center or from the Apple Watch companion app - Easily navigate books with variable scrubbing speed and chapter selection - Change playback speed Listen from your watch - Easily download your favorite books to your watch when you need to listen without your phone - Navigate local files on your watch with chapter selection and custom skip duration - Keep your progress synced between your phone and watch with both automatic and manual syncing options
Screenshots
Verdict
The clearest difference is monetization model: Booken at free against Undulib's paid. Undulib's advantage is ratings volume (29 vs 8) and iOS requirement (9.0 vs 17.0). On price, rating, review sentiment and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.5 for Undulib against 4.5 for Booken. Both are backed by a comparable volume of ratings — 29 and 8 respectively. Written reviews are what separate them: 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 November 1, 2026 and November 4, 2026 respectively.
| Parameter | Undulib | Booken |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (29 ratings) | 4.5 (8 ratings) — better |
| Positive reviews | 83.3% of reviews — better | 80.0% of reviews |
| Number of ratings | 29 — better | 8 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 26 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Charles Butler | Riley Brookins |
Customer experience
Undulib
Booken
Bugs and requests
Undulib
Reported bugs
3 issues- App does not open
- Cannot import MP3 files
- Sleep timer notifications cannot be turned off
Requested features
19 requests- Automobile mode
- Bookmark feature
- Gapless track transitioning
- Recall previous bookmark
- Search functionality
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- Index on the right side
- Condensed list display
- Sorting options (author, A-Z/Z-A)
- Sort series/show series titles together
- Ability to have list presented using only cover art
- 15-second rewind option
- Sync playlists
- Swipe forward/swipe back/tap on artwork for controls
- More visible sleep timer
- Screen rotation 180 degrees
- Third category 'misc'
- Playback at 1.5x and 2x speed
- Slower skip forward/back
- Audio feedback every 15 sec
Booken
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Undulib
No in-app purchases
Booken
No in-app purchases
Questions
Is Undulib free?
Is Booken free?
Which has better reviews, Undulib or Booken?
Do Undulib or Booken have ads?
Which is updated more often, Undulib or Booken?
Other comparisons
