Privacy Policy — Quest Keeper

This is an English translation provided for convenience. In case of any discrepancy, the Korean version prevails.

Effective date: 2026-07-25 Publisher: donminzzi lab (the "Developer") Contact: ydm2790@gmail.com

1. Summary

Quest Keeper (the "App") is a fully local, offline-only app. The App does not collect or transmit any personal information. There are no accounts, no logins, no servers, no ads, and no analytics tools. All data you enter is stored only on your device.

2. Personal Information We Collect

None. The App does not collect any personal information such as your name, email, contacts, location, or advertising identifiers. Under Apple's App Privacy standards, the App qualifies as "Data Not Collected."

3. Data Stored on Your Device

The following data is stored only on your device (and in the App Group storage shared between the app and its widget) and is never transmitted externally.

Quest (to-do) data: title, deadline, completion time, importance.
Usage event records: records of actions such as app launches, quest creation/completion/retry-tomorrow, onboarding progress, and experiment exposure, together with their timestamps. Each record may include an installation identifier and related quest identifiers (UUIDs). These are on-device statistics used to improve the app experience and are never transmitted externally.
App settings and experiment assignments: local settings related to onboarding and retention.
Installation identifier: a random UUID generated on your device when the app is installed. It is used only for local statistical distinction and never leaves your device.

This data is not sent to any server and is not shared with third parties. The app and the home screen widget access this data through shared storage (App Group), but neither the Developer nor any third party can access or receive it.

4. Notification Permission

The App uses only the device's local notifications (UserNotifications) for deadline and reminder alerts. It does not use remote push (APNs), so no data is transmitted externally for notifications. You can turn off notification permission at any time in iOS Settings, and the App's core features work even if you decline.

5. Third Parties, Analytics, and Advertising

The App contains no third-party analytics SDKs, ad networks, cloud sync (such as CloudKit), or external API calls. Therefore, no data is provided to or sold to third parties.

6. Data Retention and Deletion

Data is kept on your device until you delete it or delete the App.
Individual quests can be deleted within the App. However, usage event records (§3) related to a quest are not deleted along with the quest and remain in on-device storage.
Deleting the App removes all related data from the device and App Group storage, including usage event records.
Because the App is local-only, the Developer cannot access your data, and no separate deletion-request process is required.

7. Children's Privacy

The App does not collect personal information and therefore does not collect personal information from children.

8. Changes to This Policy

If this policy changes, we will provide notice through app updates and this document's publication location, and update the effective date.

9. Contact

Privacy inquiries: ydm2790@gmail.com