Audibloom vs Castory
Audibloom
audibloom.ioCastory
castory.studioSide by side
| Figure | Audibloom | Castory |
|---|---|---|
| Price from | $15/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 5 | 1 |
| Spec score · AI audiobook generators | 8.2 (#6) | 7.5 (#14) |
| Intended users | Audibloom is built for indie authors, KDP publishers, and small presses. | Castory describes itself as built for authors and publishers, and supports fiction, nonfiction, and serialized works. |
Plans
Audibloom
- FreeFree
- Creator$15 a month
- Per-book Pack$29, paid once
- Author Pro$39 a month
- Studio$99 a month
In their own words
Audibloom
Audibloom is a web-based AI audiobook studio that turns manuscripts into full-cast audio. Users can upload PDF, EPUB, or TXT files, paste text, or import a public URL. The system identifies narrator and character dialogue and assigns distinct voices in a multi-voice workspace. Chapters remain editable and can be rendered independently. For PDFs, the parser removes repeated headers, footers, and page numbers, then restores paragraph flow across page breaks. EPUB 2 and EPUB 3 structure is read while preserving the book’s chapter order and table of contents. Current exports are chapter-level MP3 audio; chaptered M4B packaging is planned. The Free plan provides 5 minutes of generated audio per month and watermarked MP3 downloads. Paid plans start at $15 a month and provide full commercial distribution rights, with users keeping 100% of royalties. Audibloom is built for indie authors, KDP publishers, and small presses. Higher-tier plans list additional allowances and tools, including voice cloning, WAV chapters, and parallel books.