Design unique voices for characters
Let AI narrate your biography book with human-like expression.
Design unique voices for characters
Design a sound bed to elevate your story
Edit conversationally by asking koolio to make the changes you want
Manually directing a narrator through every scene of a narrative, reflective tone across a real person's life in a biography manuscript takes time most authors don't have. koolio automates narration with unique character voices and a contextual sound bed, and you can edit conversationally by asking koolio to adjust a scene rather than re-recording it.
Type a topic, upload a document, or enter a link. Then refine your script, pick voices, and download instantly.

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