Phoneme is a pronunciation reference and drill tool for EFL and ESL teachers. The IPA Reference works entirely offline and requires no account.
If you sign in (optional): Supabase stores your email address, authentication provider, user ID, paid status, and account timestamps. Sign-in is only offered to sync your Train Unlock across devices — the Reference tab works without it.
Purchases (iOS): iOS in-app purchases are processed by Apple. RevenueCat handles entitlement management and stores a RevenueCat user ID, App Store transaction ID, and purchase status. Phoneme does not receive or store payment card information.
Purchases (web): Web purchases are processed by Stripe, which stores payment information and provides Phoneme with purchase status and customer IDs. Phoneme does not store card numbers.
Product analytics: We use PostHog to understand how the app is used — events include phoneme chart views, drill starts, paywall views, and purchase completions. Analytics events are keyed to a randomly generated device ID; if you sign in, that ID is linked to your account's internal ID only — never your name or email. Your approximate location is inferred from your IP address for regional usage stats.
Device storage: The app may store practice streaks, session history, Train unlock state, and UI preferences in local storage or device storage. This data stays on your device.
We use collected data to: provide sign-in and cross-device sync, restore paid access, process purchases, improve the product, debug issues, and answer support requests. We do not sell personal data. We do not use your data for advertising or share it with data brokers.
We do not use advertising identifiers (IDFA), ad networks, or cross-app tracking. PostHog analytics is first-party and used only to understand product usage — it is never shared with data brokers, used for advertising, or linked to your name or email. No App Tracking Transparency prompt is shown.
You can delete your account from inside the app at any time: open Settings → Delete account and confirm. You can also email support@phoneme.app from the email address used for your account and write "Delete my account." Either way, your Supabase auth record, profile data, and stored preferences are removed from our live database immediately.
Recovery window: To protect against an accidental deletion, we retain a snapshot of your account for up to 7 days after an in-app deletion, solely so we can restore it if you contact us and confirm it was a mistake. After 7 days this snapshot is permanently purged.
Backups: We keep nightly encrypted backups of our database so we can recover from data loss. A deleted account's records may remain in those backups for up to 90 days after deletion, after which the backups expire and are destroyed. Backups are encrypted at rest, are not used for analytics or marketing, and are only ever restored from in the event of data loss.
Apple and RevenueCat retain iOS transaction records, and Stripe retains web transaction records, per their own data retention policies.
You can clear device-local practice history at any time by clearing site data for phoneme.app in your browser, or by uninstalling the app.
Email support@phoneme.app to request a copy of the data associated with your account.
Phoneme is rated 4+ and does not knowingly collect data from children under 13. Sign-in and purchase features require users to be of appropriate age per Apple's and Stripe's terms of service.
We may update this policy as the product evolves. Material changes will be reflected in the "last updated" date above. Continued use of Phoneme after changes constitutes acceptance.
For privacy, account, purchase, or data questions: support@phoneme.app