Gujarati Calendar

1. Offline Computations and On-Device Storage

Gujarati Calendar is engineered with an offline-first architecture. We do not require account registration, login credentials, or cloud subscriptions:

• Local Panchang Calculations: Tithi, Nakshatra, Yoga, Karana, Choghadiya, sunrise/sunset times, Vikram Samvat dates, festival rules, and fast dates are computed locally on your device using mathematical astronomy formulas. No calculation queries are sent to a remote developer server.
• Notes, Reminders & Checklists: Personal date notes (title, description, pinned status), festival preparation checklists, and reminders are stored exclusively on your device using Android SQLite/Room database and private preferences.
• No Developer Server: DU Labs does not operate a user database server, tracking server, or cloud backend for this application. Android cloud backup is disabled by default to keep your personal notes and reminders confined to your hardware.

2. Advertising and Google AdMob Integration

To support ongoing development, research, and updates of the Gujarati Calendar, the application displays advertisements served by Google AdMob (a mobile advertising service provided by Google Inc.).

While DU Labs does not collect or store your personal information, the Google Mobile Ads SDK and Google User Messaging Platform (UMP) may process certain device and diagnostic signals when the device is connected to the internet:

• Device & Network Identifiers: Google AdMob may process advertising identifiers (such as Android Advertising ID / GAID), IP address, and network connection type to deliver, cap frequency, and combat ad fraud.
• Approximate Location: General approximate location (e.g., country or city level) inferred from IP address may be used to serve regionally appropriate ads. The app does not request or access fine GPS location.
• Ad Performance & Diagnostics: Technical information regarding ad views, clicks, impressions, and SDK error logs.
• User Messaging Platform (UMP) & Consent:In regions where required (such as the European Economic Area, UK, and relevant privacy frameworks), Google's UMP presents users with consent choices regarding personalized versus non-personalized ads. Users can re-open and manage these preferences at any time using the "Advertising privacy choices" option in the app's More section.
• User Control Over Ads:You can toggle ads on or off at any time within the app under the "More > Advertising" preferences.
• No Calendar Data Shared: Our application code does not transmit your personal reminders, notes, festival bookmarks, or calendar search history to advertising endpoints.

3. Device Permissions and Usage

The application requests minimal Android system permissions strictly necessary for its advertised features:

• INTERNET and ACCESS_NETWORK_STATE: Required exclusively to request advertisements from Google AdMob and verify network connectivity status. Core calendar tools continue functioning offline without internet.
• POST_NOTIFICATIONS & SCHEDULE_EXACT_ALARM: Used to schedule and deliver reminders for festivals, vrat, tithi, or personal agenda items. Alarms trigger on your device locally via Android AlarmManager; no remote push servers are used.
• Content Sharing (FileProvider):When you explicitly choose to share panchang details or generated day cards with contacts, Android's FileProvider grants temporary, read-only access strictly to the destination app you select.

4. Data Retention, Backup, and Deletion

Because your data is kept on your device, you have complete ownership and control over it:

• In-App Deletion: You can individually edit or remove any reminder, note, or festival checklist item directly within the app interface.
• Complete Removal: Clearing app storage in Android Settings or uninstalling the app permanently purges all local SQLite databases, cached calculations, and user preferences from your phone.
• Optional JSON Export:You can export an unencrypted JSON backup of your notes and reminders to a document folder of your choice using Android's storage framework. These files remain under your custody in your chosen local or cloud storage provider.

5. Children's Privacy

Gujarati Calendar is designed for general audiences and complies with Google Play's Families Policy and the Children's Online Privacy Protection Act (COPPA). We do not knowingly collect personal identifiable information from children under the age of 13.

6. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect operational changes, application updates, or regulatory obligations. The revised version will always be published on this page with the updated effective date.