隱私權政策

This website

This website does not use advertising cookies, tracking pixels or third-party analytics. No account is needed to use anything on it, and none of the tools — the chart, the converters, the quiz — send what you type anywhere. Conversion happens in your browser and the text never leaves your device.

The site is hosted on Vercel, which keeps standard server logs (IP address, user agent, requested URL) for security and abuse prevention. Audio files are served from the same domain.

The app

The Bopomofo Master app can be used without an account. If you create one, it exists so your progress, streak and leaderboard position survive reinstalling and moving to a new device.

What is stored if you sign in

• Your email address, or the identifier returned by Apple or Google sign-in
• A username and, if you upload one, a profile picture
• Learning progress: XP, level, streak, per-game scores, and which symbols and characters you tend to get wrong

Accounts and progress are stored with Supabase. Purchases are handled by RevenueCat on top of Apple's and Google's billing — payment details are never seen by the app or by us. Anonymous usage analytics are collected with PostHog to understand which features get used.

What is not collected

• Contacts, location, photos other than one you deliberately upload, or microphone audio
• Anything sold or shared with advertisers — there is no advertising in the app

Children

The Playroom is designed for young children and needs no account to use. We do not knowingly collect personal information from children. If a child has created an account and you would like it removed, email the address below and it will be deleted.

Your rights

You can ask for a copy of your data or have your account and everything attached to it permanently deleted. Deletion is available in the app under Profile, or by email. Requests are handled within 30 days.

Contact

Bopomofo Master is operated by Florent Porrot. For any privacy question or request, email bopomofo-app@proton.me.