Hanzly Privacy Policy

Last updated: July 11, 2026

Hanzly helps people learn Chinese characters through flashcards, writing practice, tone drills, and progress tracking. We design the app to work primarily on your device.

Data We Do Not Collect

Hanzly does not sell personal data, does not show ads inside the app, and does not track you across other companies' apps or websites. The app never reads Apple's advertising identifier (IDFA) and will never ask for tracking permission.

Analytics and Ad Attribution

To understand whether our own advertising (for example, ads on Facebook or Instagram) brings people to Hanzly, we use AppsFlyer, a mobile measurement service that processes data on our behalf. AppsFlyer receives: basic device information (such as model and iOS version), your IP address (used to infer an approximate, city-level location), Apple's identifier for vendor (IDFV), a random identifier created when the app is first installed, and app events such as install, app opens, and purchases (the product and price — never payment details).

Campaign attribution on iOS uses Apple's privacy-preserving SKAdNetwork framework, which reports results only in aggregate. We do not use the advertising identifier (IDFA), we show no App Tracking Transparency prompt, and this measurement does not follow you across other apps or websites. You can read AppsFlyer's own privacy policy at appsflyer.com/legal/services-privacy-policy, or contact us with any request about this data.

Learning Data

Your study progress, review history, streaks, achievements, and app preferences are stored on your device. This data is used to make learning features work, including spaced repetition, reminders, widgets, and progress views.

Purchases

Hanzly Pro purchases are processed by Apple through StoreKit. Apple may provide Hanzly with purchase status information needed to unlock paid content. We do not receive or store your full payment card details.

Notifications

If you enable study reminders, Hanzly uses local notifications on your device. You can change notification permissions in iOS Settings.

Diagnostics

Apple may provide developers with crash logs, performance data, and App Store analytics in aggregated or diagnostic form, depending on your device settings and Apple's policies. We use this information to improve reliability.

Children

Hanzly is an education app for general audiences. We do not knowingly collect personal information from children.

Changes

If this policy changes, we will update this page and its effective date.

Contact

For privacy questions, contact: procmeans@gmail.com