Bloox - M4B Audiobook Player

Bring your audiobooks to Bloox. Listen to M4B and MP3 files, follow a live transcript, ask about the story, and catch up when you lose the thread.

READ ALONG AS YOU LISTEN
See synchronized captions as your audiobook plays, with separate controls for word and sentence highlighting. Tap a transcript line to return to that moment, or use full-screen captions. English transcription runs on your device.

ASK ABOUT YOUR BOOK
Forgot a detail or how two characters are connected? Ask Books uses your listening position and available transcript to help answer questions about what you've heard. It asks for your agreement before sending your question and relevant book context to Bloox servers. An internet connection is required. Ask Books is currently a beta feature and requires Share Analytics to be enabled.

WHAT DID I MISS?
Get an AI recap of recent listening, revisit your last session, or pick up the story with a summary in the Home Screen widget. Recaps are generated on your device using Apple Intelligence. Rate a recap and optionally share details to help us improve it.

KEEP TRACK OF THE CAST
Look up character biographies and see names highlighted in the transcript. Character lookup uses an online service. You can also rate individual biographies.

BOOKMARKS WITH CONTEXT
Save a moment, add a note, and find it again. On compatible devices, AI-generated context helps you remember what was happening.

BRING YOUR WHOLE LIBRARY
Import from Audiobookshelf, Dropbox, Google Drive, iCloud, Files, or your computer over Wi-Fi. Play your own DRM-free M4B and MP3 files offline after import. Bloox supports embedded chapters, CUE sheets and multi-file books. If a book has no chapter data, create chapters at a length you choose. Navigate between chapters, correct track order, and edit the title, author, narrator, series or cover art when needed.

BUILT FOR EVERY MOMENT
Use CarPlay on the road, Apple Watch playback controls on your wrist, and a sleep timer with presets, a custom duration and End of Chapter. Nightstand mode keeps nighttime controls easy to reach. Adjust playback speed from 0.5× to 3× and customize skip intervals. Control playback from the Lock Screen or Control Center, or use Siri to play and pause.

SEE YOUR LISTENING
Explore listening time, streaks and session history. Keep your place with saved positions, bookmarks and adjustable resume rewind.

FREE, WITH YOUR CHOICES IN REACH
No subscription, in-app purchases or ads. Your imported audio stays on your device for playback and transcription. Ask Books and character lookup use online services; optional feedback can include content you choose to share. You can turn usage analytics off in Settings. See our privacy policy for details.

REQUIREMENTS AND LIMITS
Bloox requires iOS or iPadOS 26 or later. English transcription needs compatible hardware and the downloaded speech model. On-device recaps and bookmark context need a compatible device with Apple Intelligence enabled and its model available. Once their models are ready, transcription and local recaps can work offline. Ask Books and new character lookups need internet access. AI-generated text can be inaccurate and may include unwanted story details.

Made for iPhone and iPad, with Light and Dark modes.

Bloox. Your books, understood.