Privacy policy

Last updated September 13, 2026

The short version. We store your email for sign-in, your reading preferences and progress so you can pick up where you left off, and, if you subscribe to Pro later, a billing identifier from our payment partner. We don’t sell data.

What we collect

Account
Your email address, and the account identifier Google, Apple or Facebook gives us if you continue with one of them, so you can sign in.
Reading preferences
The language and level you choose, plus typography settings, so the reader picks up where you left off.
Reading activity
Which articles you’ve opened, your progress through each one, sentence taps, and your saved words. We use this to power continue-reading, history, the “for you” rail, and your vocabulary list.
Billing
If you subscribe to LeftLingo Pro, our payment partners (Stripe, via RevenueCat) process your payment details — we never see or store your card number. We store a subscription identifier, your plan, and the date your access runs through. Accounts that have Pro free during our soft launch have no billing data at all.
Diagnostics
Anonymised crash reports and basic usage analytics so we can find and fix issues. No third-party advertising trackers.

What we don’t do

We don’t sell your data, and we don’t share it with advertisers. We don’t profile you across other sites. The only third parties that see your data are the infrastructure providers we need to run the service — hosting, our payment partner for billing, and our error-tracking provider for crash reports.

Your controls

You can ask us to delete your account by writing to support@leftlingo.com from the email address on the account. We’ll close the account and delete or de-identify the personal data tied to it within 30 days. Some information may be kept: records we’re required to keep (such as billing records), feedback, questions and error reports you sent us (with your account removed from them), usage statistics that no longer identify you, and copies in backups until they expire on their normal schedule.

Want a copy of your data, or have a question about something we’ve stored? Email support@leftlingo.com and we’ll help.

Cookies

We use cookies to keep you signed in and to remember your reading preferences (language, level, font scale, reader mode). We don’t use cookies for advertising or cross-site tracking.

Changes

We’ll update this policy as the service evolves. Material changes are announced to active accounts by email before they take effect.

See also our terms of service.