# Continuum: Read & Listen — EPUB & Audiobook Sync

> Sync ePub text with audiobooks for immersive, cross-format reading. (iPhone/iPad app by RJ DIGITAL HUB SLU.)

- Source: https://appshunter.io/ios/app/continuum-read-and-listen/id6759292107 (this page in markdown: same URL + `.md`)
- Developer: [RJ DIGITAL HUB SLU](https://appshunter.io/developer/1468348951)
- Category: Books, Education
- Price: Free with in-app purchases
- Rating: 3.70/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 29 MB
- Languages: American English, Catalan, Finnish, French (France), German (Germany), Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish
- Released: 2026-02-23
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/continuum-read-and-listen/id6759292107/reviews.md

## What is Continuum?

Read your ePub and listen to its audiobook, at the same time.
Continuum is the only app built for immersive reading: text and audio playing together, always in sync, always at your pace. Import your own files, link them once, and read or listen interchangeably, your furthest point is always saved, regardless of format.

IMMERSIVE READING MODE
Follow the ePub text while the audiobook plays. The chapter starts when the audio chapter starts. Ideal for language learners, students, and readers with dyslexia.

ONE PROGRESS BAR. TWO FORMATS. 
Read 3 chapters. Listen to 2 more. Continuum tracks your furthest point across both, automatically. No confusion, no lost place.

SCAN A PAPER PAGE. JUMP TO THE EBOOK.
Reading a physical book? Photograph the page you stopped on. Continuum uses OCR to find that exact spot in your ePub instantly. Switch from paper to digital without losing your place.

CHAPTER SYNC WIZARD
Link your ePub to your audiobook chapter by chapter, once. Continuum handles the rest. Edit any pair manually when chapters don't match exactly.

EPUB READER 
Customizable fonts, sizes, line spacing, and background color. Highlights, annotations, bookmarks. Full-text search across the entire book. OpenDyslexic font support.

AUDIO PLAYER
Supports MP3, M4B, and M4A. Speed from 0.5x to 3x. Sleep timer up to 1h30. Skip forward 30s / back 15s. Chapter navigation.

YOUR LIBRARY
Shelf or list view. Sort by title, date added, or recently played. Track hours read, hours listened, and your reading streak. Full backup export and import. iCloud sync across all your Apple devices.

YOUR FILES. YOUR DEVICE. Your privacy.
No account. No subscription. No tracking. Works exclusively with DRM-free files. Import from iCloud, Dropbox, Google Drive, or Humble Bundle. No store lock-in. No ecosystem restrictions.

One-time purchase. Yours forever.

Terms of Use: https://continuumreader.app/terms.html
Privacy Policy: https://continuumreader.app/privacy.html

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Continuum | $6.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/continuum-read-and-listen/id6759292107/reviews.md

### 5/5 — LOVE IT

*2026-07-10*

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

**Developer response:** 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

### 4/5 — Needs higher playback speeds

*2026-07-03*

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

### 1/5 — Doesn’t Work

*2026-06-15*

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.

**Developer response:** 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.

## Frequently asked questions about Continuum

### 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.

## Version history (last 5 releases)

### 2.2 — 2026-08-08

Minor bug fixes

### 2.1 — 2026-08-01

Minor bug fixes

### 2.0 — 2026-07-24

Version 2.0

Continuum now connects with your library and your car.

Calibre Library: connect your Calibre or Calibre-Web server and pull your books straight from the catalog. Search your whole collection and download only what you're about to read. Large downloads keep going in the background even if you lock your phone, and resume on their own if the connection drops.

CarPlay: listen to your audiobooks from your car's screen, with your library, your chapters and native controls.

iCloud Sync: your progress, your bookmarks and your library travel across your devices. Start reading on your iPhone and pick up right where you left off.

Storage management: a new panel in Settings shows how much space each book takes and lets you free up space without losing your progress or your notes. With Calibre set up, you can re-download any book whenever you want.

Series organization: your books are grouped by saga, in the right order, with title, author and series read automatically from the file.

Dark theme: the whole app looks polished in dark mode and adapts automatically to your iPhone's appearance.

Playback improvements: audiobook cover on every screen, clearer ±15-second controls, and smoother continuity when moving between reading, listening and immersive mode. Stability fixes for playback and headphones.

### 1.20 — 2026-07-07

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.

### 1.9 — 2026-07-06

Minor bug fixes

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All apps by RJ DIGITAL HUB SLU: https://appshunter.io/developer/1468348951

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*