1. Current local learning
Routine HSK stores vocabulary progress, answers, saved/review items, routines and preferences in its app-private learning database. Interface language, pinyin and Chinese character display choices are local settings. Bundled audio playback does not record your microphone. Current local study does not automatically upload learning records.
2. Planned account and purchase services
When available and chosen, Supabase sign-in will process account identifiers and identity-provider information such as email, name and profile image URL. Device/session identifiers will protect account access. RevenueCat and Apple or Google will process purchase identifiers and entitlement status using an HSK-specific customer identity. We do not directly collect card or bank details, Gmail messages or Google Drive files. These integrations are not yet verified in the HSK app.
3. Planned manual backup and deletion
The planned backup service uploads learning records only on your explicit request. HSK backups and entitlements are separate from our other apps. Upload replaces the HSK cloud backup; restoring replaces local learning records rather than automatically merging them. HSK account deletion is intended to preserve other apps under the shared sign-in identity. The app and service deletion journey still requires verification.
4. Diagnostics and providers
Firebase usage analytics and crash reporting have a user preference in Settings. When enabled for a configured production app, that preference defaults to on and can be turned off. Automatic SDK collection starts disabled; development and preview builds do not enable collection. Diagnostics use selected usage events, fixed screen names and operational error codes, not account identifiers or learning text. HSK device behavior remains unverified. Supabase and RevenueCat may process service security and operational data when the corresponding services are enabled. We do not use advertising or cross-app advertising tracking. Provider processing can involve countries outside your country, including the United States; confirmed HSK transfer and retention details will be recorded before service activation.
5. Retention and your choices
Local records remain on the device until removed through available reset controls or app removal; operating-system backups may retain or restore copies under your device settings. Server retention and deletion replay must be verified before HSK account services are enabled. Support messages sent to our Gmail address are handled by Google and used to answer your request; avoid sending passwords, payment details or unnecessary sensitive information. You may request access, correction or deletion through [email protected]. See deletion instructions.
6. Contact
Controller: ALAN. Privacy officer: 김선일. Address: 34, Nakseongdaeyeok 6-gil, Gwanak-gu, Seoul 08799, Republic of Korea. Privacy and support: [email protected]. Updated: 2026-10-16. Changes to service collection will be reflected here before activation.