Privacy Policy

Last updated: September 11, 2026

1. Information We Collect

The App collects the following information only as needed:

• Location: Used to retrieve moonrise/moonset times and weather for your current location. Collected only when you grant the OS-level location permission. If permission is not granted or you have manually selected a city, the App uses the coordinates of the city you chose.
• Diary text, mood tags, moon age, weather information: Diary text and mood tags you enter, plus the moon age, moon phase, and weather information for that day. These are stored only in local storage on your device by default.
• App settings: Notification toggles, reminder times, display preferences, language. Stored locally on your device.
• Anonymous Firebase identifier and AI request count: A randomly generated anonymous identifier and the number of AI requests made per day are used to prevent abuse and enforce usage limits. We do not collect your name, email address, or password for this purpose.

2. Data Sent to Third-Party Services

The App sends the minimum information necessary to the following services to provide its features:

• OpenWeatherMap (weather data): Latitude and longitude are sent to the OpenWeatherMap API to retrieve current weather. Diary text and personally identifying information are not sent.
• Firebase Cloud Functions and Google Gemini API ("Tonight's Words" generation): When you use the AI feature, the diary text, mood tag, moon age, moon phase, and weather information you have entered are sent over HTTPS to our Firebase Callable Function and then to Google's Gemini API to generate a short message. The function does not persist the prompt or generated text. The generated text is returned to the App and stored only on your device.
• Firebase Authentication, App Check, and Cloud Firestore: Firebase creates an anonymous identifier to authenticate AI requests. App Check verifies that requests originate from the App. Cloud Firestore stores only the anonymous identifier, local date, time-zone offset, and daily request count for abuse prevention and usage limits.
• Firebase Analytics: We use Firebase Analytics to understand aggregate feature usage and improve the App. Firebase may process an app-instance identifier, device/app information, and in-app interaction events. Diary text and AI prompts are not included in Analytics events.

These transmissions occur only as needed for the corresponding feature. For Google's handling of these services, please see the Firebase Privacy and Security documentation, Gemini API Additional Terms of Service, and Google Privacy Policy.

3. Information Stored on Your Device

Diary text, mood tags, generated messages, and settings are stored in local storage on your device (Hive / SharedPreferences). Our backend does not store diary text, AI prompts, or generated messages. It stores only the anonymous identifier and daily request-limit data described above.

If you back up your device (iCloud Backup, Google Drive Backup, etc.), the data may be backed up to the cloud per your OS backup settings. Such backups are managed by the OS provider (Apple / Google) and we do not have access to them.

4. Notifications

All notifications from the App (diary reminder, moon-viewing notification, etc.) are local notifications running on your device. We do not use any push notification servers and we cannot read the content or destination of these notifications.

5. Analytics and Advertising

The App uses Firebase Analytics as described above. It does not include an advertising SDK and does not use Firebase Crashlytics.

6. Payment Information

Premium purchases are processed through the Apple App Store or Google Play payment system. Payment details such as credit card numbers are managed by Apple / Google and we do not have access to them. We use only the receipt information issued by the store to confirm the validity of a purchase.

7. Children's Use

The App is intended for all ages, but we do not intentionally collect personally identifiable information from users under the age of 13.

8. Your Rights

You can perform the following actions at any time:

• Export or import your diary data from the Settings screen
• Delete all diary data, settings, and caches stored on the device, plus the server-side AI request counter and anonymous Firebase user, using "Delete all data" in Settings
• Revoke location and notification permissions in your device's OS settings

9. Changes to This Policy

We may update this Privacy Policy from time to time. For material changes, we will notify you through the App or the App Store listing. Changes take effect when posted on this page.

10. Contact

For inquiries about this Privacy Policy, contact PPOONN STUDIO:

Email: info@ppoonn.net

You can also use the form below:

Contact form