Continuum: Read & Listen

Continuum: Read & Listen

EPUB & Audiobook Sync

2 ratings
3 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 23, 2026
  • July 7, 2026

Features

Continuum: Read & Listen video #1 for iPhone
Continuum: Read & Listen screenshot #2 for iPhone
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Continuum: Read & Listen screenshot #7 for iPhone
Continuum: Read & Listen screenshot #8 for iPhone
Continuum: Read & Listen screenshot #9 for iPhone
iphone
ipad
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About

Immerse yourself in reading and listening simultaneously with this app. It syncs your ePub text with audiobooks, tracks your progress across both formats, and even allows you to scan physical book pages to find the corresponding digital location.

Simultaneous ePub reading and audiobook listening
Automatic progress tracking across formats
Scan physical pages to find ePub location
Chapter sync wizard for manual adjustments
Customizable ePub reader
Variable speed audio player
Library management with stats
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What's New in Continuum

1.20

July 7, 2026

What's New • Audio playback speed up to 10x, with quick presets and fine manual control. • Clearer statistics by week, month, and year. • Stability fixes and performance improvements.

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In-App Purchases

$5.99

Continuum

Full lifetime access

User reviews

LOVE IT

This app is incredible for the price! upload your own files and you can read up to 10x when most apps can’t offer more than 2-3x. Additionally being able to add the epub and follow along is excellent if you don’t mind turning the pages yourself :) works on ipad beautifully and hopefully apple watch one day
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Response from developer

Hi, thanks for the kind words on the concept! Great news, the next update bumps playback speed all the way up to 10x, with a manual fine-tune so you can dial in exactly the pace you want. It's already on its way. Hope you'll enjoy the faster listening! Continuum App - team

Needs higher playback speeds

would instantly give 5 stars if the playback speed could go 4x or higher, love the concept though :)

Doesn’t Work

I paid for the app, but it didn’t work. Loaded both my epub and m4b audio files, but it wouldn’t play the audio file. The audio file plays fine in every other app.

Response from developer

Hi, and thank you for your patience, I'm sorry the audiobook wouldn't play. You were right: certain M4B files weren't being handled correctly on import, which is exactly what you ran into. This is fixed in version 1.8, now available. Your M4B should load and play just as it does elsewhere. If anything still doesn't work, please reach out at support@undercoverlab.com and I'll help you directly. Thanks for giving Continuum a try.

Developer apps

FAQ

How does Continuum sync ePubs and audiobooks?

Continuum allows you to link your ePub files with their corresponding audiobooks chapter by chapter. Once linked, the app ensures that as you read the text, the audiobook plays in sync, and vice versa. You can also manually adjust chapter pairings if they don't match perfectly.

Can Continuum help me switch between physical and digital books?

Yes, Continuum features an OCR scanner. You can photograph a page from a physical book, and the app will use that image to find the exact corresponding location within your ePub file, allowing for a seamless transition.

What file formats does Continuum support for audiobooks?

Continuum supports common audiobook formats including MP3, M4B, and M4A. The audio player also offers features like adjustable playback speed from 0.5x to 3x, a sleep timer, and quick skip functions.

Does Continuum require an account or subscription?

No, Continuum operates without requiring an account, subscription, or tracking your activity. It is designed for privacy and works exclusively with DRM-free files imported from cloud storage or your device.

What customization options are available for reading ePubs in Continuum?

The ePub reader in Continuum offers extensive customization, including adjustable fonts, font sizes, line spacing, and background colors. It also supports highlighting, annotations, bookmarks, and the OpenDyslexic font for improved readability.

How does Continuum track my reading progress?

Continuum uniquely tracks your furthest point across both reading and listening. Whether you read several chapters or listen to a few more, the app automatically saves your progress, so you can pick up exactly where you left off, regardless of the format.

Is Continuum available on multiple Apple devices?

Yes, Continuum supports iCloud sync across all your Apple devices, including iPhone and iPad. This ensures your library and reading progress are consistent no matter which device you use.

What is the age rating for Continuum?

Continuum has an age rating of 4+. This indicates it is suitable for children and adults, with no mature content. The app is designed to be accessible and beneficial for a wide range of users.