Questions and problems, big or small. Email us and a person replies.
Last updated: September 2, 2026
Email [email protected] for anything at all.
Subscriptions bought on iPhone or iPad are managed and cancelled through your Apple ID.
Restore purchases and delete your account from the Account tab in the app.
Privacy questions go to [email protected].
Write to [email protected]. A person reads every message.
To help us answer in one reply, include:
LinguaBoost Pro bought in the app is billed by Apple through your Apple ID, not by us. To change or cancel it, open the Account tab in the app and tap Manage subscription, or go to Settings, tap your name, then Subscriptions. A cancelled subscription stays active until the end of the period you already paid for.
Refunds for App Store purchases are decided by Apple. Request one at reportaproblem.apple.com.
Subscriptions started on the web are billed by us. Open Account on the web and tap Manage billing to update a card, cancel, or download invoices. If anything there does not work, email us and we will sort it out by hand.
If you subscribed on one device and Pro is not showing on another, open the Account tab, tap Go Pro, then tap Restore purchases at the bottom of the screen. Make sure the device is signed in to the same Apple ID that made the purchase.
If Restore purchases finds nothing, or you paid and Pro still did not switch on, email us with the receipt Apple sent you and we will attach the purchase to your account.
You can delete your account from inside the app: open the Account tab and tap Delete account. That removes your words, folders, and account data. Deleting the account does not cancel an App Store subscription on its own, so cancel that first through your Apple ID.
If you cannot get into the app, email [email protected] from the address you signed up with and we will delete it for you.
For a copy of your data, a correction, or any other privacy request, write to [email protected]. How we handle data is set out in the Privacy Policy.
Free includes 50 active words at a time, one language pair, a daily AI capture, full pronunciation audio, folders, and daily review.
LinguaBoost Pro removes the limits: every word you save stays active, you can study several language pairs at once, and capture has no daily limit. Pro is offered monthly or yearly, and the price you see on the Pro screen is what your store charges.
The app shows only the price your store reports, so this means the App Store did not answer. Check that the device is online and signed in to the App Store, then tap the message to try again.
Sign-in runs through a secure browser page. If it never comes back to the app, close the app fully and open it again. If it still fails, email us the address you use and what the page says.
Tell us what happened at [email protected]. Bugs get fixed in the next update, and we will tell you when it ships.