Last updated: 2026
Hanzi Ben is designed to keep your data on your device. This policy explains the few cases where information leaves your phone.
Handwriting recognition — when you use Check on the practice card, or draw to search, the strokes you draw (a sequence of coordinates and timings — not an image or screenshot) are recognised on your device, using Google's ML Kit Digital Ink Recognition. The strokes stay on your device and are not sent to us or to any third party. The first time you use recognition, the app may need to prepare an on-device language model.
Purchases & restore — Hanzi Ben offers an optional one-time Pro upgrade. Purchases and restores are handled entirely by the app store (Apple or Google) using your store account; Hanzi Ben never sees or stores your payment details. The app only keeps a local flag recording whether Pro is unlocked. Restoring purchases asks the store what your account owns and re-enables Pro on a new device — no Hanzi Ben account is involved.
No account — Hanzi Ben has no account system and no login. You are not asked for an email, name, or any identifier to use the app or to unlock Pro.
Everything else stays local — your curriculum selection, deck order, card position, learned/progress markers, streak data, Pro unlock flag, settings (theme, language, voice, OCR mode) and your "My Hanzi" list are stored only in your browser's local storage on your device. Hanzi Ben has no server and does not collect, transmit or sell any of this information.
Export / Import — the Export Progress button creates a JSON file containing the local data above, saved to your device. You decide if and how to share or back it up. Import simply reads such a file back into local storage.
No ads, no analytics, no tracking — Hanzi Ben does not include advertising SDKs, analytics SDKs, or third-party trackers.
Children — Hanzi Ben does not knowingly collect personal information from anyone, including children, since no personal information is collected at all.
Changes — if this policy changes, the updated version will be made available within the app and on our website.
Contact — questions about this policy can be sent to support@hanziben.com or via www.hanziben.com.