Read. Listen. Switch cleanly.
Move between your ebook and audiobook without losing your place.
Tandem pairs the books you already have and keeps reading and listening in step while you move through the day.
Supports EPUB, M4B, and MP3 on iPhone, iPad, and Mac.
Start a chapter with your eyes on the train. Pick it up later with your ears on the walk home. Tandem keeps your place between reading and listening.
Bring your own EPUB and audiobook, pair them, and switch back and forth in one app. No account required. Your files stay on your device.
Move from reading to listening, or back again, without starting the chapter over.
Import a DRM-free EPUB and a matching M4B or MP3 audiobook. No bookstore lock-in.
Tandem is built around one job: keeping the ebook and audiobook aligned while you switch between them.
Supports EPUB, M4B, and multi-file MP3
Runs on iPhone, iPad, and Mac — one universal app
Requires iOS 26, iPadOS 26, or macOS 26