Gichul Master Privacy Policy
Effective October 21, 2026
Gichul Master is a past-exam practice app provided by Next Studio. If you do not sign in, all your study records stay on your device.
1. Information stored on your device
Questions you solved and the answers you chose, wrong-answer notes, bookmarks, study statistics, mock exam scores, where you stopped, settings such as text size, and a cache of your purchased passes (to check expiry). This information is not sent to a server and is removed when you delete the app.
2. Sign-in and information stored on our server
To buy or restore a pass you sign in with Apple or Google. Your account identifier and email (if the provider shares it) are stored with our authentication service (Supabase) and used only to attach your pass to your account. The free sample questions work without signing in.
3. Purchases and passes
Payments are handled by the Apple App Store; Gichul Master never receives your card details. To grant a pass, the app receives the transaction number and product from the store, we confirm it with the store's servers, and we store the pass type, start and end times, and the purchase record on our server. If a purchase is refunded, the pass is revoked.
4. Crash information
If the app crashes, an error report (device model, operating system version, app version, error details and a random installation ID) is sent to Firebase Crashlytics to find the cause. It does not include your name, email, or what you studied.
5. Ads and tracking
Gichul Master has no ads, does not read the advertising identifier (IDFA), and does not track you across apps. We do not use third-party analytics tools.
6. Retention and deletion
Records on your device are removed when you delete the app. Your account data on the server is deleted immediately when you choose Account → Delete account in the app. Purchase records are kept, unlinked from your account, for refund handling and bookkeeping for the period required by law (five years under the Korean Act on Consumer Protection in Electronic Commerce) and then deleted.
7. Service providers
Supabase provides authentication and server storage, Google (Firebase) provides crash reporting, and Apple and Google provide sign-in and payments. We do not sell your information or share it with anyone else.
8. Content source
Questions and final answers are materials released by the Human Resources Development Service of Korea (Q-Net) under the Korea Open Government License Type 1 (attribution), which the app reformats for display. This app is not affiliated with that organization or any public agency.
9. Children and changes
Gichul Master is for general users and does not knowingly collect personal information from children. If this policy changes, we update the effective date on this page and announce important changes in the app.