What's the best free iOS audiobook player for files I already own?

If you want a free iOS app for your own M4B or MP3 audiobook files, the main options are Bloox, BookPlayer, and Prologue. BookPlayer is open-source and minimalist. Prologue is polished and paid one-time. Bloox is free, supports the same file formats, and adds Ask Books beta, live transcription, character identification, and 'What Did I Miss?' recap summaries. Bloox requires iOS 26 or later.

What's the best iOS audiobook app for Audiobookshelf?

If you run an Audiobookshelf server and want a native iOS client with real-time server progress sync, ShelfPlayer and Plappa are still the best fit. Bloox can connect to Audiobookshelf so you can browse, download, and import books into its local library, but it does not currently sync listening progress back to the server. If you want Bloox's transcript-aware features on selected Audiobookshelf books, import them into Bloox.

How is Bloox different from Audible?

Audible is Amazon's audiobook store and player. Bloox is just a player: it does not sell audiobooks or connect directly to Audible. You can export purchased Audible books as standard M4B files with a desktop tool such as Libation, then import those files into Bloox. Bloox is free with no subscription, has no ads, and adds Ask Books, transcription, character help, and recap summaries that Audible does not offer.

Is there an audiobook app with live transcription?

Bloox is the only iOS audiobook player that ships with live, on-device transcription that synchronizes word-by-word with playback. Transcription uses Apple's Speech framework and runs entirely on your iPhone or iPad — no audio is sent to a server. Requires iOS 26 or later.

Does Bloox work with Audible?

Bloox does not control, sync with, or connect directly to Audible. To use a purchased Audible book in Bloox, export it as a standard M4B file with a desktop tool such as Libation, then import that file into Bloox.

Bloox vs Audible, BookPlayer, Audiobookshelf & More

The short version: different apps solve different problems. Bloox is a free iOS player for audiobook files you already own (M4B, MP3) with transcript-aware features no other player has: Ask Books beta, live transcription, character identification, and recap summaries. It is not the best choice for everyone, and this page is honest about who should pick something else.

If you mostly buy from Audible and want the simplest possible path: stay in the Audible app. If you self-host with Audiobookshelf and need real-time progress sync back to the server: use ShelfPlayer or Plappa. If you want to import books into a private local library and get Bloox’s AI listening tools, Bloox is probably worth a try.

Feature comparison

Bloox compared to the most-recommended iOS audiobook players.

	Bloox	Audible	BookPlayer	Prologue	Bound	AudioBooth	ShelfPlayer / Plappa
Price	FreeNo IAP, no subscription, no ads	Subscription$14.95/mo or per-credit	FreeOpen source, donations	Paid one-time~$5	Subscription~$2.99/mo or per-feature IAP	Free / ProPremium tier for advanced features	FreeOpen source
Plays your own files (M4B / MP3)	✓ Yes	✗ NoAudible files only	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ YesVia Audiobookshelf server
Direct import from your Audible library	✗ NoUse Libation to export standard files first	✓ YesNative	✗ No	✗ No	✗ No	✗ No	✗ No
Google Drive import	✓ YesBrowse, search, multi-select	✗ No	● Via Files app	● Via Files app	● Via Files app	● Via Files app	✗ NoABS-only
Audiobookshelf support	● Import onlyBrowse/download/import books; no progress sync back to server yet	✗ No	✗ No	✗ No	✗ No	● LimitedRead-only browsing in some versions	✓ YesFull progress & library sync
Ask Books / ask your book	✓ BetaGrounded in heard-so-far transcript context	✗ No	✗ No	✗ No	✗ No	✗ No	✗ No
Live transcription (sync’d captions)	✓ YesOn-device, word-level	✗ No	✗ No	✗ No	✗ No	✗ No	✗ No
AI recap (“What did I miss?”)	✓ YesApple Intelligence, on-device	✗ No	✗ No	✗ No	✗ No	✗ No	✗ No
Character identification & cast list	✓ YesOnline character biographies	✗ No	✗ No	✗ No	✗ No	✗ No	✗ No
Sleep timer	✓ YesFull-screen dark, 60-tick ring	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ Yes
Variable playback speed	✓ Yes0.5x to 3.0x	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ Yes
Smart rewind on interruption	✓ Yes	● Limited	● Limited	✓ Yes	● Limited	✓ Yes	● Limited
CarPlay	✓ YesLibrary browsing and playback controls	✓ YesFull CarPlay UI	✓ Yes	✓ Yes	✓ Yes	✓ Yes	✓ Yes
Apple Watch	✓ YesPlayback remote for the iPhone app	✓ Yes	● Limited	✓ Yes	● Limited	✓ Yes	● Limited
Android version	✗ NoiOS only	✓ Yes	✗ NoiOS only	✗ No	✗ No	✗ No	● Web/PWA
Account required	✓ No account	✗ Amazon account	✓ No account	✓ No account	✓ No account	✓ No account	● Server account
Tracking / ads	✓ No adsOptional crash & analytics can be disabled; Ask Books sends question/context only after consent	✗ YesAmazon analytics	✓ None	✓ None	✓ None	✓ None	✓ None
Open source	✗ NoClosed source, free	✗ No	✓ YesGPL-3.0	✗ No	✗ No	✗ No	✓ YesMIT/GPL
Minimum iOS	iOS 26Required for the app	iOS 17	iOS 16	iOS 17	iOS 17	iOS 17	iOS 17

✓ Yes · ● Partial / limited · ✗ No

Where Bloox loses (yes, this is on the comparison page)

iOS 26 or later required. Bloox does not run on earlier iOS versions. On-device AI recaps also require a compatible device with Apple Intelligence available.
No direct Audible import. To use a purchased Audible book in Bloox, export it as a standard M4B file with Libation first.
No Audiobookshelf progress sync yet. Bloox can import from Audiobookshelf, but if you need real-time progress sync back to the server, ShelfPlayer or Plappa do that today; Bloox does not.
iOS only. No Android version, no web version. If your household is mixed-platform, you’ll need different apps per device.
Closed source. If your selection criteria require open source, BookPlayer (GPL-3.0) is the closest equivalent feature set without the AI layer.

App-by-app, in plain English

Audible

Subscription

Amazon’s store + player. Largest catalog of professionally narrated audiobooks, great CarPlay, ubiquitous on every device. Files stay within the Audible app.

Pick if: you mostly buy new releases and want the easiest possible flow. Skip if: you want Bloox’s transcript-aware features or a local file-based library.

BookPlayer

Free / Open source

Free, GPL-licensed iOS player for your own files. Mature, reliable, minimalist UI. No AI features, no transcription, no character help.

Pick if: you want the simplest free player and don’t care about AI features. Skip if: you want transcription or recap summaries.

Prologue

Paid one-time

Polished iOS player for your own files, with great CarPlay and a refined Now Playing experience. One-time purchase, no subscription, no AI.

Pick if: you want the most polished “just plays your files” experience and don’t need AI. Skip if: you want it free or want transcription.

Bound

Subscription / IAP

Modern iOS player with cross-device sync, sleep timer, and many quality-of-life features. Some functionality gated behind IAP or a small subscription.

Pick if: you want sync across multiple iOS devices without running a server. Skip if: you want completely free or AI features.

AudioBooth

Free / Pro

Active iOS player handling both audiobooks and eBooks with a free tier and a paid pro tier. Developer is responsive on Reddit and ships features fast.

Pick if: you want one app for both audiobooks and eBooks. Skip if: you want a focused audiobook-only experience with AI.

ShelfPlayer / Plappa

Free / Open source

iOS clients for the self-hosted Audiobookshelf ecosystem. Tight integration: streaming, downloads, real-time progress sync to the server, multi-user.

Pick if: you self-host Audiobookshelf and want native server sync. Skip if: you don’t run a server or want Ask Books, transcription, and recap tools the ABS clients don’t offer.

Bloox

Free, no IAP

Free iOS player for your own files with Audiobookshelf import, Ask Books beta, live transcription, character identification, and “What Did I Miss?” recap summaries.

Pick if: you want free + AI listening help + a local library. Skip if: you need an earlier iOS version, native ABS progress sync, Android, or open source.

Pick the right app for your library

Honest recommendations based on how you store and listen.

I buy from Audible and want zero hassle

Stay in the Audible app. It is still the path of least resistance for the Amazon ecosystem: no importing, no waiting, nothing extra to think about.

Pick: Audible

I buy from Audible but want to own my files and try AI features

Use Libation on your computer to export a purchased Audible book as a standard M4B file, then import that file into Bloox. The imported book can use Ask Books, transcription, character lists, bookmarks, and recaps.

Pick: Bloox or Bloox + Libation

I run an Audiobookshelf server at home and want native sync

Use ShelfPlayer or Plappa. They speak the Audiobookshelf API directly for progress, library state, downloads, and multi-user server workflows. Bloox can import from Audiobookshelf, but it does not yet sync listening progress back to the server.

Pick: ShelfPlayer or Plappa

I run Audiobookshelf and also want AI transcription

Import selected Audiobookshelf books into Bloox when you want Ask Books, live transcript, characters, or a recap. Use ShelfPlayer/Plappa for the books where server progress sync matters more than the AI layer.

Pick: ShelfPlayer + Bloox as a companion

I have a folder of MP3s I ripped from CDs years ago

Drop them in iCloud or Google Drive and import to any of the file-based players. Bloox handles 10+ filename patterns and warns about gaps before they become playback surprises — useful for messy old CD rips. BookPlayer and Prologue are equally good choices for the playback itself.

Pick: Bloox, BookPlayer, or Prologue

I listen mostly before bed and fall asleep often

The recap and sleep timer combination is exactly why I built Bloox. Wake up, tap “What Did I Miss?”, get a short catch-up, and continue listening. If one small plot point is still fuzzy, use Ask Books instead of rewinding blindly.

Pick: Bloox

I’m on iOS 18 or older and can’t upgrade

Bloox requires iOS 26 or later. On-device AI recaps also require a compatible device with Apple Intelligence available.

Pick: BookPlayer or Prologue

I’m on Android

Bloox is iOS only. On Android, Smart AudioBook Player and Voice Audiobook Player are the most-recommended free players for your own files. For Audiobookshelf users, the official Audiobookshelf Android app is the obvious pick.

Pick: Smart AudioBook Player, Voice, or Audiobookshelf for Android

Try Bloox with a book you own

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