Read along while listening to audiobooks with word-by-word synchronization
Turn any book into an audiobook with on-device text to speech
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Free core features including read-along text, device transcription, offline functionality, and public-domain library. Optional Pro upgrade for advanced analytics.
Not given
Key features
Word-level synchronized text highlighting with 60fps
On-device transcription without cloud upload
Offline playback after single engine download
Support for 99 languages
Import multiple audio formats including MP3, M4B, FLAC, OGG
Accessibility profiles for dyslexia, ADHD, and vision impairment
Built-in library with 20k+ public-domain titles
Quote saving and sharing with generated cards
Reading analytics with neuroscience-based brain score
Character map feature for tracking book figures
EPUB and text-based PDF reading
On-device text to speech that works offline
Word-by-word highlighting during narration
Web article saving from Safari and other apps
Playback speed control from 0.5x to 3x
Background playback and Lock Screen controls
Reading and listening position sync
Highlights, notes and bookmarks
iCloud sync across devices
Free Project Gutenberg classics library
What makes it different
Complete privacy with no account or cloud uploads required
No external lyrics database; transcription generated directly from your audio
Supports your own audiobook files without DRM restrictions
No ads in core experience
On-device speech generation means narration works completely offline
No account, no server, and no tracking of what you read
One app for both reading and listening with unified library
Free tier holds five books with unlimited listening
Your library stays readable even if you stop paying
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