Castory vs Vox9
Castory
castory.studioVox9
vox9.ioSide by side
| Figure | Castory | Vox9 |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 5 |
| Spec score · AI audiobook generators | 7.5 (#14) | 7.7 (#12) |
| Content ownership | Users retain ownership of uploaded content, and Castory says it does not claim ownership of generated audio. | The maker says authors retain ownership of uploaded text and uploaded MP3 audio, and can delete their content from Vox9. |
| Narration | It supports multiple narration roles, including distinct voices for dialogue and characters. | Authors can use more than 100 AI voices or upload their own human narration. |
| Security | Castory says it implements reasonable technical and organizational safeguards; it does not name a security certification or compliance standard on this page. | The privacy policy states that data is transmitted via HTTPS/TLS and describes hashed passwords, JWT session tokens, limited employee access, security patches, and rate limiting. |
Plans
Vox9
- Free author accountFree
- Free listener accessFree
- Starter top-up pack$3, paid once
- Standard top-up pack$12, paid once
- Large top-up pack$22, paid once
In their own words
Vox9
Vox9 is an audiobook platform for serialized fiction, where listeners can stream episodes for free and independent authors can publish them. Its genres include science fiction, fantasy, HFY and horror. Authors may narrate with more than 100 AI voices or upload human narration; episodes can pair audio with synchronized scene images and captions, and existing YouTube videos can be imported as episodes. Listener access is free, and no account is needed to begin listening. A free author account includes 100,000 narration characters per month, described as roughly 1.5 hours of audio, with no credit card required. Paid plans start at $7.99/mo; one-time credit packs cost $3.00, $12.00 or $22.00, and purchased credits do not expire. Authors keep 50% of subscription payments and 80% of tips, with PayPal payouts once the balance reaches $9. Vox9 is available on Android, iOS and the web. The maker says authors retain ownership of uploaded text and MP3 audio, can delete their content, and their materials are not used to train AI models.