Alternative
Both apps give characters their own voices. AudiFlo makes them on your phone; Lyraboo casts a cloud AI voice for every character, automatically, for every book.
Written by the Lyraboo team. Facts about AudiFlo come from its own website, checked in October 2026.
AudiFlo is an Android audiobook reader that keeps everything on the phone: EPUB with covers and images, PDF with OCR (so scanned pages work), DOCX, TXT and web novels with next-chapter detection. Speech is generated on the device, so nothing is uploaded and it plays offline. Its character player detects dialogue and lets you give each character a voice, with a separate narrator; it can clone a voice from a short recording and offers 3D audio for headphones. The core app is free with no ads.
| Lyraboo | AudiFlo | |
|---|---|---|
| Character voices | Cast automatically for every book | Dialogue detected, voices assigned by you |
| Where voices are made | Cloud | On the phone |
| Offline | No | Yes |
| Files | EPUB, PDF, TXT | EPUB, PDF (with OCR), DOCX, TXT, web novels |
| Voice cloning | No | Yes |
| Price | 1 hour a month free, then a plan | Free; optional premium add-ons |
| Platform | Android | Android |
Pick AudiFlo if offline listening, privacy, voice cloning or a free app matter most, or if your PDFs are scans. Pick Lyraboo if you want to upload a novel and simply hear it as a full-cast audiobook, with no setup. For more options, see the best EPUB to audiobook apps for Android and character voice TTS.
AudiFlo is a trademark of its owner. Lyraboo is an independent app and is not affiliated with, sponsored by, or endorsed by AudiFlo. This comparison reflects publicly available product information.
The things people notice in the first chapter — and the reasons they stay.
Lyraboo’s AI finds every character in the book and casts a distinct voice for each — automatically, for every book. You always know who is speaking, and dialogue sounds like a real conversation instead of one narrator doing all the parts. Most reading and text-to-speech apps use one voice for everything.
Under the player, the book scrolls with the voice the way song lyrics do in Spotify: words light up as they are spoken, each line shows who says it, and tapping any word jumps there.
Chapters, speed from 0.25× to 3×, background playback with lock-screen controls, and it picks up exactly where you stopped.
Pick an EPUB, PDF or TXT and there is nothing to set up: the first chapter is ready in about one to two minutes, and the rest generate while you listen.
Novels, fanfiction and web-serial exports, indie ebooks, study PDFs — plus over 1,000 English classics already in the app.
One free hour of listening every month, no card needed. Hours are spent once per chapter — replaying is always free.
Both turn your own books into audiobooks with character voices on Android. AudiFlo generates speech on the phone — offline, private and free — and lets you assign voices to the characters it detects. Lyraboo generates its voices in the cloud and casts every character automatically, then plays the book in a music-app-style player with the text scrolling along.
Per its website, the core app is free with no ads and unlimited offline playback; optional premium add-ons unlock extra features, and referrals earn premium time. Lyraboo is free for one hour of listening a month, then a subscription.
AudiFlo — its voices run on the device. Lyraboo needs an internet connection.
AudiFlo offers voice cloning from a short sample. Lyraboo does not: it casts its own voices automatically, and they cannot be hand-picked.
Upload a book you own and let the app turn it into a multi-voice audiobook automatically.