J7seven

Your books. Your voice. On-device.

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10 AI voices 31 languages 100% offline DRM-free EPUBs iOS 17+ Open Source

Library

Now Playing

Voice Studio

Import & Play Instantly

Drop in a DRM-free EPUB, tap play. No conversion step.

100% On-Device

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

10 Studio Voices

Male and female narrators, each custom-trained for natural intonation.

31 Languages

English, Japanese, Korean, Arabic, French, German, Spanish, and more.

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

+ 6 more voices including Paul, Ryan, Beth, Claire, Diana & Eve

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.