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Privacy Policy (Kigaku to Issho / 気学といっしょ)

Last updated: 2026-08-04 / Applies to: 気学といっしょ (Kigaku to Issho), the App Store version (the "App")

1. Introduction

The App overlays a Nine Star Ki (kyusei kigaku) directional chart on a map so you can check auspicious directions and keep a journal of your trips. To respect your privacy to the fullest extent, all user data — including birth dates, journal entries, photos, and location — is handled only on your device and is never sent to the developer or any third-party server. The only network communication is map display via Apple Maps (see Section 5).

2. Information We Collect or Transmit

The App does not collect or transmit any personal information.

The App has no server. No information about you is sent to the developer or any third party. There is no account registration or login of any kind.

Information the developer never obtains: email address, phone number, postal address, location, date of birth, photos, contacts, device identifiers, advertising IDs, or any other information that directly identifies you.

3. Location

4. Camera and Photos

5. Map Display and Apple Maps

The App displays maps using Apple's MapKit (Apple Maps), an iOS system feature. Loading map tiles involves communication between your device and Apple's servers; this is part of how iOS works, and the developer has no access to that communication. Apple's handling of this data is governed by Apple's Privacy Policy.

The App performs no other network communication of any kind — no advertising, no analytics, and no external font loading.

6. Information Stored on Your Device

The App stores the following information only on your device, solely to provide its features. It is never sent outside the App.

CategoryDetailsPurpose
ProfilesName (a nickname is fine) and date of birthDetermining your principal and monthly stars and computing auspicious directions
PlacesNames and coordinates of points you register, such as home or workSwitching the origin for direction judgments
JournalDate, destination name and coordinates, direction, purpose, notes, photosJournaling, collections, and progress charts
SettingsTheme color, app icon, direction reference (true/magnetic north), and other preferencesCustomizing the App

This data lives in the App's sandbox on your device and cannot be accessed by other apps or external parties. If you use iOS device backups (such as iCloud Backup), on-device data may be included in your backup; this is standard iOS behavior, and the developer has no access to its contents.

7. Third Parties and Tracking

8. Reviewing and Deleting Your Data

9. Changes to This Policy

This policy may be revised as features or practices change. Significant changes will be communicated through App updates.

10. Contact