Support
Something not working, or a question the app didn't answer? Email support@readuet.com and a person will reply. Including the diagnostics from the app makes it much faster.
Send diagnostics with your message. In the app, open Settings → Copy diagnostics and paste the result into your email — or use Send to developers right below it to skip the email entirely. Either way it contains the app version, your device model and recent errors — no book text and no passwords.
Getting started
I don't own any audiobooks. Can I still use it?
Yes. Open Discover and add a free book — thousands of public-domain titles come with their narration already paired and levelled A1–C2. Nothing to buy, nothing to upload.
How do I add my own book?
- Tap Add book in your library.
- Choose the ebook: EPUB, FB2 or TXT.
- Choose the audio: MP3, M4A, M4B, AAC, OGG, FLAC or WAV. Multiple files are fine — they play in filename order, so make sure they sort correctly.
- Tap Upload and process, then leave the screen if you want. You'll get a notification when it's ready.
The audiobook is optional. You can add a text-only book now and attach the narration later from the headphones icon on its cover.
How soon can I start reading?
A library book someone has read before you opens straight away — the alignment already exists and is shared. For your own upload on Duet, about thirty seconds: the read-along opens at the front of the book and the rest keeps lining up behind you while you read, so the length of the audiobook doesn't really change when you get to start. On Solo, the book is ready to read and play once the upload is processed. You get a notification either way.
I forgot my password
On the sign-in screen, tap Forgot your password? and enter the address you signed up with. We email a six-digit code; type it in and choose a new password. If nothing arrives, check spam first — and if you originally signed in with Apple or Google there is no password to reset, so use that button instead.
When something goes wrong
The highlight is drifting out of sync
Usually one of three things: the audiobook is an abridgement or a different translation from the ebook, the recording is a dramatisation with multiple voices, or the files were paired by mistake. Readuet absorbs narrator introductions, front matter and spoken chapter numbers, but it can't align two genuinely different texts. If a free library book is drifting, tell us which one — mis-paired titles get pulled.
Processing failed
Try again first; transient provider errors are the most common cause. If it fails twice, email us the book title and the diagnostics. DRM-protected files cannot be processed — Readuet has no way to open them, and no intention of acquiring one.
PDFs
Not supported, and not planned in the near term. A PDF describes where ink goes on a page, not where sentences begin and end, so aligning one to audio means guessing — and a wrong guess desynchronises the whole book.
Chinese, Japanese or Korean books
Not supported yet. Readuet needs to know where one word ends and the next begins, and those writing systems don't mark it — so supporting them is real work rather than a setting we can flip.
A word won't stop being highlighted
Familiarity comes from how well you've actually retained the word, not from how many times you've tapped it — so a word you keep forgetting keeps glowing. To settle it by hand, tap the word and either pick a level 1–4 or mark it known.
Reading on a Kindle or a KOReader
KOReader
KOReader ships a progress-sync plugin, and Readuet is a server it can talk to — so this is set up once and then invisible.
- Readuet → Settings → Sync with other readers → KOReader and Kindle. It shows a server URL, a username and a key.
- KOReader → Tools → Progress sync → Custom sync server, and enter that URL.
- Choose Login, not Register, and use the username and key from Readuet.
Register always fails, on purpose — accounts come from Readuet, not from the e-reader. The key is shown once; regenerating it keeps the username and kills the old key straight away, which is also how you revoke a device you no longer have.
Kindle
Kindle exposes no sync interface at all, so the bridge is manual. In the reader, open Sync with Kindle. To come from the Kindle, either photograph the page — the text is read off the photo on your device — or paste a few lines from the Kindle app. Either way the text is matched into the book and the reader offers to jump there. To go to the Kindle, Readuet gives you a phrase that occurs exactly once in the book; paste that into the Kindle's own search.
A blurred or angled photo is the usual reason a match comes back weak, and a page with very little text on it is the other. Nothing jumps on its own: an uncertain result is labelled Closest match and shows you the passage first, so you can look at it and cancel.
Subscriptions and billing
Free is a real plan, not a trial. It gives you the whole public-domain library with the read-along highlight, tap-to-translate vocabulary and spaced-repetition review, for as long as you like. What it doesn't do is bring in books of your own: transcribing and aligning a pair nobody has processed before is the part that costs money, and that's what a subscription buys.
Solo adds your own ebooks and audiobooks — the full text and the full audio, with the vocabulary engine on them, and it will line the two up when you ask: tap a sentence to play from there, or pause and it finds your place in the text, usually in under three seconds. Duet is the one that does it continuously, without being asked — the live read-along highlight on your own uploads, keeping pace with the narrator — plus today's story. The library is read-along on every plan, including free, because those books are aligned once and shared.
Both paid plans start with a free week. You are not charged until it ends, and cancelling inside it costs nothing.
Subscriptions are sold and billed by the App Store or Google Play, not by us. That means:
- To cancel or change your plan, use your store account — iOS: Settings → your name → Subscriptions. Android: Play Store → Payments and subscriptions → Subscriptions.
- Refunds are handled by the store. Apple: reportaproblem.apple.com. Google: the order history in Google Play.
- If a purchase didn't unlock, open Settings → Readuet Premium → Restore purchases. If that doesn't do it, email us.
Cancelling stops future billing; your plan keeps working until the period you've paid for ends. Your books and vocabulary stay in your account either way.
Deleting your account and your data
Deletion is immediate and permanent — there is no grace period and no soft-delete, so treat it as final. It removes your access, your reading positions and your saved vocabulary. A book file you uploaded is removed once no account still has access to it, which can be later than your own deletion if you shared an identical upload with someone else.
Two ways to do it yourself, both landing on the same thing:
- In the app — Settings → Account → Delete account.
- On the web — app.readuet.com/delete-account, which spells out the steps and what is kept.
To remove something without closing the account — delete a single book, revoke the KOReader sync key, unlink a synced document, turn off notifications — see app.readuet.com/delete-data.
Cancel your subscription separately. It is billed by the App Store or Google Play, not by us, so deleting your Readuet account does not stop it. Cancel in your store account first. If you later sign up again, Restore purchases reattaches it.
If a pipeline is still running on one of your books, deletion is refused for a few minutes until it finishes — try again shortly.
If you can't get into the app at all, email support@readuet.com from the address you signed up with and ask for deletion. You can request a copy of your data at the same address. Details are in the privacy policy.
Contact
We read everything. Bug reports with diagnostics attached get looked at first.