Comparison

Crown Book vs AudioBookSync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Crown Book

Features
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A full-screen reader for large text files on your watch. One book at a time: a .txt file sent from Crown Book for iOS. Sending another book to your watch replaces the previous one. Font size matches system settings – you can change it while reading in the watchOS control center. Large files (>10 KB) are divided into pages and remember the last page you were reading. You can scroll through text with your finger, the crown, or the "double tap" gesture. Tapping the system clock takes you to the top of the page. At the beginning of each page there is a button with the page number, which, when pressed, takes you to any page (selection with a preview of the first line of text). At the end of each page (except the last) there is a button that takes you to the next page. At the end of the book, there's a "CLOSE" button to close the book. A closed book can be deleted ("Delete" button) or started over ("BOOK" button). You can set a widget on the watch face displaying the page number of the currently read page and several lines of text (modular). ! The program comes with instruction (in the form of a mini-book: "Help" button) for two of my apps (Crown Book and Equatch) in two languages ​​(English and Polish). Sending a file from iPhone to Apple Watch: UTF-8 encoded .txt format (you can use TextEdit in macOS to change the encoding). .txt compatibility with Apple Pages: File - Export to - Plain Text... - Save. Compatibility with free gutenberg.org ebooks (PlainText UTF-8). The loaded .txt file can be viewed in the iOS app (button with the file name). The .txt file remains in the iOS app until it is replaced by another file. ! When sending a file from iPhone, the Apple Watch must be unlocked with the app running. ! If the text doesn't appear on your watch after uploading, try again until it succeeds. Minimum system requirements: watchOS 10 and iOS 17 ("double tap" scrolling requires Apple Watch 9 or later).

About

AudioBookSync

Features
Read full description

AudioBookSync is the intelligent audiobook player that bridges listening and reading. LISTEN YOUR WAY • Plays M4B, MP3 and MP3 folders • Background playback with lock-screen controls • Adjustable speed (0.5Ɨ to 3Ɨ) • Adaptive skip-back when resuming — AudioBookSync remembers where you stopped • Sleep timer (including "end of chapter") • Bookmarks with notes FIND ANY SPOT IN YOUR BOOK • Point the camera at a page — OCR + fuzzy matching jump the audio to the exact passage • Works with printed books, screenshots and handwritten pages • Fully on-device: no cloud, no upload, no tracking • Choose between Apple Speech (fast) or Whisper (local, best for German) READ WHERE YOU STOP LISTENING • Built-in EPUB reader with themes (Light/Dark/Sepia), 8 fonts, adjustable size and margins • "Listen here" button jumps from reader to the matching audio position • Seamless cross-navigation: open the book in either mode CARPLAY + HOME-SCREEN WIDGET • CarPlay: full library, chapter navigation and Now Playing while driving • Home-screen widget: current book with progress ring and quick actions • No subscription, no upsell — included with the free version iCLOUD DRIVE LIBRARY • Drop your audiobooks into iCloud Drive → AudioBookSync → Audiobooks • Bookmarks and library state stay on your device • Nothing ever leaves your iCloud account AUDIOBOOKSYNC PRO — OPTIONAL ONE-TIME PURCHASE The free version keeps one audiobook active at a time. Switch books for free at any time, or unlock Pro for: • Unlimited audiobooks — use your entire library at once • Multi-device sync — listening progress syncs automatically between iPhone and iPad via your private iCloud Drive • Shared transcription index — transcribe a book once, every other device picks up the index • Apple Watch — slice off a section of your audiobook, send it to your Apple Watch and listen offline — leave the iPhone at home. Position syncs back to iPhone and iPad automatically. NO ADS. NO SUBSCRIPTION. NO TRACKING. Your library, your bookmarks, your progress — all stored in your iCloud Drive.

Screenshots

Crown Book4 screens
AudioBookSync4 screens

Verdict

The call

The clearest difference is in-app purchases: Crown Book at none against AudioBookSync's 1. Crown Book also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. AudioBookSync sells 1 one-off in-app purchase. Crown Book asks for nothing beyond the download.

UpkeepUpdate frequency

Crown Book ships an update every 2 days, AudioBookSync every 2 weeks. Both last shipped on October 7, 2026.

Scorecard2 real differences Ā· 4 level
Crown Book versus AudioBookSync: the parameters behind the verdict, then further details
ParameterCrown BookAudioBookSync
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS17.6 — better18.6
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperArtur JanowiczHans-Peter Jordi

In-app purchases

None

Crown Book

No in-app purchases

1 purchases

AudioBookSync

One-time1
  • AudioBookSync Pro$5.99

Questions

Is Crown Book free?
Crown Book is free to download, with no in-app purchases.
Is AudioBookSync free?
AudioBookSync is free to download, with in-app purchases available.
Do Crown Book or AudioBookSync have ads?
Neither Crown Book nor AudioBookSync shows ads.
Which is updated more often, Crown Book or AudioBookSync?
Crown Book ships an update every 2 days, and AudioBookSync every 2 weeks. Most recently, Crown Book was updated on October 7, 2026 and AudioBookSync on October 7, 2026.

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