Any book,
read aloud. Free.
Echo is a free text-to-speech audiobook app for Android. On-device neural AI voices turn any PDF, EPUB, document, or article into an audiobook — unlimited listening, fully offline, and your books never leave your phone.
or explore the features first
Don't take our word for it. Press play.
These clips came straight out of Echo's voice engine — the same narrators you get in the app, reading books from the free library. No cloud, no studio, no cherry-picking.
Every voice here runs on an ordinary Android phone, which is why listening is unlimited: it costs us nothing when you press play, so there's no meter.
reading A Princess of Mars — Edgar Rice Burroughs
reading Dracula — Bram Stoker
reading The Secret Garden — Frances Hodgson Burnett
reading The Wonderful Wizard of Oz — L. Frank Baum
Straight out of the engine — no studio edits. All four passages are public-domain books from Echo's free library.
Free for everyone who needs it
Echo exists so that anyone — students, people with visual impairments, dyslexic readers, or anyone who simply can't afford another subscription — can listen to any book they own.
That's why the neural AI voices are in the free tier, not behind a paywall. All formats, unlimited listening, offline — free. An optional Premium plan adds signature narrator voices and helps keep the free tier free.
Why not just use a cloud TTS app?
Cloud text-to-speech apps run voices on servers — so they meter your listening and stop working offline. Echo runs the voices on your phone, so it doesn't have to.
Credits, character caps, and per-hour metering
Unlimited listening. There is no meter to run out.
Stops working the moment you lose signal
Voices run on your phone — flights and dead zones included.
Your books upload to someone else’s servers
Your books never leave your device. Nothing to censor, nothing to leak.
Natural voices locked behind a subscription
The neural voices are in the free tier. Premium is optional narrators, not the basics.
What's in the app
A complete offline text-to-speech toolkit, built around an on-device voice engine tuned for whole books.
Neural AI Voices — Free
An on-device Kokoro neural voice engine rebuilt for hours-long listening, not short demo clips. And it is in the free tier — not behind a paywall.
Any Document, Any Article
PDF to audiobook, EPUB to audiobook, DOCX, RTF, plain text, Markdown, and HTML. Paste any web URL and Echo extracts just the article. Share text from any app.
Works Offline, Forever
The voices run on your phone, not in someone else’s data center. Airplanes, subways, camping trips — Echo keeps reading when cloud TTS apps go silent.
Pronunciation You Can Teach
A deep pronunciation layer handles fantasy names, loanwords, and technical jargon. Anything it still misses, you fix once — forever.
Full-Screen Reader
Word-level highlighting synced to the audio, bookmarks, chapter navigation, sleep timer, and automatic resume. Read along or just listen.
Customized Narrating
Customized narrating for listening: blend any two voices into your own narrating style, or pick from curated character and accent presets. Enunciation and pacing are exposed as knobs, not hidden defaults.
Three steps to your audiobook
From any document, article, or URL to natural narration in minutes. No recording studio required.
Bring Your Text
Import a document, paste a URL, or share text from any other app on your phone.
Pick Your Voice
Choose a preset, blend a custom voice in the mixer, and dial in pacing and enunciation.
Listen Anywhere
Full-screen, background, or with a sleep timer — no internet connection required.
Two plans, no meters
No credits, no hidden caps, no surprise charges. The free tier is the whole app.
Free
$0 forever
Full neural AI voices, every document format, unlimited offline listening, voice mixer, pronunciation dictionary, reader, and more.
Premium
$9.99/mo or $59.99/yr
Signature narrator voices Atlas and Sterling, plus future premium perks — and you help keep the free tier free.
Where Echo is going
Echo starts as a reader. It's becoming a place where books and the people who love them find each other. Honestly labeled: this is the vision, not the app today.
A home for new authors
Publish your book in Echo, grow a fanbase, and let readers listen with a narrator you chose.
A community of book lovers
Shared libraries, ratings, reading lists, and author updates — built around the books you love.
Full books to audio files
Turn an entire book into a downloadable audio file you can keep, share, or post — even to YouTube.
Be first when Echo launches
Echo is in closed testing on Android and coming soon to Google Play. Join the waitlist and we'll email you the moment it's live.