This privacy policy applies to the Go47 app (the "Application") for iOS, created by Alan Ho (the "Service Provider") as a free service. This service is provided "AS IS".
Go47 is an entirely on-device application. It does not connect to the internet, does not transmit any data to external servers, and does not collect personally identifiable information.
With your permission, the Application reads GPS coordinates and timestamps from photos stored in your photo library. This metadata is used solely to determine which of Japan's 47 prefectures you have visited. Photo content (pixel data) is never read, stored, or uploaded. All processing happens locally on your device.
The Application does not collect your device's Internet Protocol (IP) address, does not track usage analytics, and does not use advertising SDKs or third-party analytics services.
The Application does not gather real-time or precise location information from your mobile device. It reads GPS metadata that is already embedded in photos in your photo library — it does not request or use live location services.
The current version of the Application does not use any third-party SDKs, analytics services, or advertising networks. No data is shared with third parties.
Future versions may incorporate Firebase Analytics and Firebase Crashlytics (Google LLC) for anonymous usage analytics and crash reporting. If added, these services will receive aggregated, non-personally-identifiable event data (e.g. app opens, feature usage counts) and anonymized crash logs. No photo data, location data, or personally identifiable information will be transmitted. This policy will be updated before any such integration ships.
All visit data derived from your photos is stored only on your device using standard iOS mechanisms (UserDefaults). You can delete this data at any time by using the "Reset All Data" option in the app's Settings, or by uninstalling the Application.
You can stop all use of the Application by uninstalling it via the standard iOS process. You can revoke photo library access at any time in iOS Settings → Privacy & Security → Photos → Go47.
The Application does not knowingly collect personally identifiable information from children under the age of 13. If you are a parent or guardian and believe your child has provided personal information, please contact the Service Provider at info@go47.app.
Because Go47 does not transmit any data off-device, your information is protected by iOS device security (including device encryption). The Service Provider does not maintain any servers that store your data.
Future versions may use Apple's on-device Foundation Models framework (Apple Intelligence) to generate personalized travel insights from your visit data. This processing happens entirely on your device using Apple's on-device language model — no data is sent to any server. This feature will only be available on supported devices (iPhone 15 Pro and later).
This Privacy Policy may be updated from time to time. The Service Provider will notify you of any changes by updating this page. Continued use of the Application after changes constitutes acceptance of the revised policy.
By using the Application, you consent to the processing of your photo library metadata as described in this Privacy Policy.
If you have questions about this policy, please contact the Service Provider at info@go47.app.