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Sine: Audiobook Player MP3/M4B

Sine: Audiobook Player MP3/M4B

Listen offline, sleep timer

7 ratings
5 reviews
📚 Books
Free

Details

Released
June 17, 2026
Updated
October 14, 2026

Features

Developer

Dallen Burwell
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About

This app allows you to import and listen to your own audiobooks in various formats. It offers advanced playback controls, chapter navigation, a sleep timer, and a unique silence skipping feature to save listening time. Your privacy is protected with no accounts or tracking.

✓Import MP3, M4B, M4A, FLAC, AAC files
✓Variable playback speed
✓Chapter navigation and bookmarks
✓Sleep timer with fade
✓Skip Silence feature
✓10-band equalizer
✓CarPlay and widget support
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What's New in Sine

1.5.2

October 14, 2026

This update improves audiobook playback and gives you more control over the player. • Clearer narration at increased playback speeds, including with Skip Silence enabled • A Mono Audio option for listening through one earbud • Adjustable playback-button sizes and separate text sizing • Choose which optional buttons appear in the player, with a preview that reflects your choices • CarPlay chapter updates and a Skip Silence button that stays in sync • Adaptive Smart Rewind with an adjustable maximum, based on how long you paused • English, Spanish, and Russian interface support, with some secondary text still in English • More balanced spacing between playback controls and the bottom buttons Read Along is temporarily unavailable while we focus on playback improvements.

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User reviews

Most RecentHighest RatedLowest Rated

Best Audiobook app out there

Absolutely love this app! The design is clean, simple, and super easy to use. Importing audiobooks is a breeze, and the quiet gap skip feature is goated! Everything just works really well. Highly recommend!
Ggarlickfury

Like it!

New user, so far very good! Suggestion - it would be nice if the Chapter listing opened positioned at the current chapter to avoid excessive scrolling. Also possibly one line Chapter entries instead of two.
SSilverM99

Editing book covers

I’m loving this app so far, but would love to edit the covers
Mmaryasau

Response from developer

The latest version of the app now supports editing covers and files. Thanks for the suggestion!

Ticks all the boxes

this app does it all. I especially enjoy the equalizer, it is so nice to be able to roll some treble off of the narrator‘s voice at night time to make it sound a little more muffled into my ears. This app is a keeper, give it a try.
CCHOCOBASCO

Response from developer

Glad to hear you’re enjoying the equalizer! Thanks for the review, Happy listening!

I can get through a book so much faster!

The feature that lets me trim out the long silences reduces the listening time by so much! I saved almost 2.5 hours using the balanced mode!
LLaXative14

Response from developer

Glad to hear you like the app! Hope you keep saving yourself time. Happy Listening!

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FAQ

What file formats does Audiobook Player support?

Audiobook Player supports importing and playing MP3, M4B, M4A, FLAC, and AAC audio files. This allows for a wide range of personal audiobook collections to be used within the app.

Can I listen to audiobooks offline with Audiobook Player?

Yes, Audiobook Player is designed for offline listening. Once your audio files are imported via methods like Files, AirDrop, or WiFi upload, you can listen to them without an internet connection.

Does Audiobook Player have ads?

No, Audiobook Player is ad-free. The developer emphasizes a privacy-first approach, and the app does not contain advertisements, ensuring an uninterrupted listening experience.

How does the 'Skip Silence' feature work in Audiobook Player?

The 'Skip Silence' feature automatically detects and skips silent gaps and trailing pauses in audiobooks, saving you listening time. You can tune its sensitivity to your preference and see your lifetime savings.

Is Audiobook Player available on Android devices?

Currently, Audiobook Player is built for iOS devices only. It is designed to work with iPhones and supports features like CarPlay.

What is the age rating for Audiobook Player?

Audiobook Player has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

How often is Audiobook Player updated?

The latest version of Audiobook Player was released on August 1, 2026, with version 1.2. While specific update frequency isn't detailed, this indicates active development and recent improvements.

Does Audiobook Player offer a free trial?

Audiobook Player is completely free to download and use. There is no cost associated with accessing its features, and it does not require a subscription or offer paid upgrades.