LysnBox

Any content. Your voice. On-device.

Download on the App Store

31 languages 100% offline EPUB · PDF · Web · Text iOS 17+ Open Source

Library

Now Playing

Voice Studio

Import & Play Instantly

EPUB, PDF, web URL, or pasted text — tap play. No conversion step.

100% On-Device

Apple Neural Engine. No API keys, no internet, no data leaves your device.

31 Languages

From English, Spanish & French to Japanese, Korean, Hindi & Arabic — natural narration in 31 languages.

Open In Support

Share EPUBs, PDFs, or web links from Files, Safari, or Mail directly into LysnBox.

Lock Screen & Bluetooth

Background audio, Now Playing controls, AAC quality on wireless headphones.

Remembers Your Place

Paragraph-level position persisted across launches. Resume where you left off.

Find your narrator

Marcus Studio AI

Deep, Cinematic & Resonant

Nathan Studio AI

Clear, Articulate & Professional

Oliver Studio AI

Warm, Engaging & Conversational

Alice Studio AI

Crisp, Expressive & Natural

Localized across 31 languages — from English & Spanish to Hindi, Arabic, Russian & Vietnamese

Supertonic 3

On-device TTS by Supertone — lightning-fast multilingual synthesis running entirely on the Apple Neural Engine. 31 languages, ~99M parameters, no cloud required.