HanziHunter — Privacy Policy

Last updated: 21 June 2026

HanziHunter (“the app”, “we”) is a Chinese-character learning app for iPhone. We built it to be private by design: your study data lives on your device and in your own iCloud account, and we collect no personal information on our own servers. This policy explains exactly what is and isn’t collected.

Information stored on your device and in your iCloud

• Your profile name (optional). You can set a display name in the app. It is stored only on your device and in your private iCloud, and is never transmitted to us or to any server we operate. The app has no accounts and no sign-in.
• Your study data. Your progress, review history, streak, favourites, and personal notes are stored on your device (via Apple’s SwiftData) and synced through your private iCloud (Apple CloudKit) so they follow you across your own devices. We have no access to this data — it lives in your iCloud account, governed by Apple’s Privacy Policy.

Anonymous analytics

The app uses TelemetryDeck to understand aggregate, anonymous usage (for example, which screens are used and how often the paywall is shown). For each event, this sends — among other standard, non-identifying information:

• anonymous event names and counts;
• a one-way hashed identifier derived from your device that cannot be reversed to identify you; and
• basic technical and usage context such as device model, operating-system version, screen size, time zone, language/region, light/dark appearance, and general session and retention metrics (for example, whether this is a new or returning install).

This information is processed only in aggregate and does not include your name, email, notes, or study content. It is not used for advertising, and is not used to track you across other apps or websites. TelemetryDeck processes it as our data processor under their privacy policy.

What we do not collect

• No advertising identifiers (no IDFA), no ad networks, no cross-app tracking.
• No precise location, contacts, photos, microphone, or camera data.
• We do not sell or share your personal data with anyone.

Purchases

Subscriptions and the lifetime purchase are processed by Apple through the App Store. We never see your payment details. Purchases are handled per Apple’s standard terms.

Deleting your data

You can permanently delete your account and all associated data at any time in the app: Settings → Delete account. This removes your profile, progress, favourites, and notes from your device and from your private iCloud. Because there is no copy on our servers, this fully erases your data. You may also email us with any request.

Children

HanziHunter is rated 4+ and is suitable for all ages, but it is not directed at children under 13 and does not knowingly collect personal information from them.

Changes

If this policy changes, we will update this page and the “Last updated” date above.

Contact

Questions about privacy? Email natezhang8@gmail.com.