Turn any book into an audiobook with on-device text to speech
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Stage
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MVP
Founded
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Based in
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DE
Pricing model
Freemium
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Pricing
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Free: €0 with 10 minutes per month. Basic: €24/month with 3,000 minutes per month. Pro: €120/month with 15,000 minutes per month. Ultra: €250/month with 25,000 minutes per month. Enterprise: Custom pricing. Overage: €0.035 per minute. Yearly billing available with 2 months free.
Key features
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
Audio event detection with confidence scores
Scene context identification
Activity context inference
Emotional context detection
Speaker identification
Custom acoustic model training
API and SDK access
Real-time audio processing on device
Hardware-level marker injection into EEG
JSON and CSV structured output
What makes it different
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
Multiple layers of context from single audio pass with timestamped results
Millisecond-precision hardware-level timing in EEG signal
Multi-layered contextual understanding beyond single labels
Strophe
Sentien by Eventag