Read along while listening to audiobooks with word-by-word synchronization
Free AI voice isolator to remove noise from audio and video in your browser, or strip background music with GPU isolation
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.
Noise cleanup: free and unlimited. AI voice isolation: 1 Credit per minute. Credit packs: 100 Credits for $4.99 (5.0¢ per minute), 250 Credits for $9.99 (4.0¢ per minute). New accounts receive 10 free Credits.
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
Free browser-based noise cleanup using DeepFilterNet3
AI voice isolation with Mel-Band RoFormer to remove background music
No file upload for noise cleanup mode
Supports multiple audio and video formats
Before and after comparison player
Works on mobile browsers and phones
Downloads as WAV or MP3
10-minute file length limit with 100 MB size limit for AI isolation
Three strength settings: Gentle, Balanced, and Maximum
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
Local browser processing eliminates upload costs and per-minute billing for noise cleanup
No account required and no watermark for free noise cleanup
Private processing with automatic upload deletion
Separate voice and background tracks output for AI isolation
Credits never expire with no subscription requirement
VoiceIsolator