Privacy Policy

Effective Date: September 28, 2026

App Name: Binary Calculator Offline

Binary Calculator Offline ("we", "our", or "us") respects your privacy. This Privacy Policy explains how our mobile application handles information when you download, install, and use Binary Calculator Offline on Android devices.

1. Overview & Offline Operation

Binary Calculator Offline is designed primarily as an offline utility. All core computing features—including binary arithmetic, radix base conversions, bitwise logic, two's complement calculations, IEEE-754 floating-point breakdowns, subnet mask analysis, and calculation history logging—operate locally on your device without transmitting your calculation data to external servers.

2. Data Collection and Usage

We do not collect, store, or sell any personally identifiable information (PII) such as your name, email address, phone number, or physical location through our application.

• Calculation Data & History: All calculations, expression entries, and saved history records are stored locally on your device using an encrypted local SQLite database (Room Framework). You have full control to clear, export, or import your history at any time.
• App Preferences: Your selected app configurations (such as theme mode and language choice) are saved locally on your device using Android SharedPreferences.

3. Device Permissions Used

The application requests the following Android system permissions to support optional utilities and ad delivery:

• android.permission.INTERNET: Required to load advertising assets via Google AdMob and deliver app status or update notices when an active internet connection is available.
• android.permission.ACCESS_NETWORK_STATE: Allows the app to verify whether an active network connection exists before attempting network calls.
• android.permission.VIBRATE: Enables optional haptic tactile feedback when tapping keypad buttons.
• android.permission.POST_NOTIFICATIONS: On Android 13 (API 33) and higher, allows optional push notifications regarding application features via OneSignal. You can grant or deny this permission at any time in system settings.

4. Third-Party Services and SDKs

To support application development and maintenance, the app incorporates trusted third-party SDKs that may process non-personally identifiable technical diagnostic data (such as device model, OS version, and advertising ID):

• Google AdMob: Provides banner, interstitial, app open, and native ads. Google AdMob may use device advertising identifiers in compliance with Google's Privacy Policy: Google Ads Policy.
• OneSignal: Used for optional push notification delivery. View OneSignal's privacy policy at: OneSignal Privacy Policy.
• Google Play In-App Updates & Reviews: Provided by Google Play Services to check for app updates and prompt in-app reviews.

5. Children's Privacy

Binary Calculator Offline is a general-audience utility suitable for developers, students, and engineers. The application does not knowingly request or collect personal information from children under the age of 13 (or under 16 in the European Union) in compliance with the Children's Online Privacy Protection Act (COPPA) and General Data Protection Regulation (GDPR).

If a parent or guardian becomes aware that a child has provided us with personal information through third-party ad interactions, please contact us, and we will promptly take steps to address the matter.

6. Data Security

We prioritize the security of your data. Because your calculations and preferences remain strictly on your local device, your data is protected by Android's native application sandboxing architecture.

7. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. Any changes will be reflected by updating the "Effective Date" at the top of this policy page. You are advised to review this policy periodically for any changes.

8. Contact Us

If you have any questions, feedback, or concerns regarding this Privacy Policy or app data practices, please contact us using the playstore listing mail.