Privacy Policy

Effective Date: September 16, 2026
Last Updated: September 16, 2026

Hex Calculator ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we handle information when you use our mobile application.

1. Overview

Hex Calculator is a programmer calculator and radix conversion tool. All calculations, conversions, and computation history are processed and stored entirely on your device. We do not collect, transmit, or store any personal data on external servers.

2. Information We Do Not Collect

We do not collect any personally identifiable information, including but not limited to:

• Your name, email address, or contact details
• Your precise geographic location
• Photos, files, or media from your device
• Contacts or call logs
• Your calculation data or history entries

3. Third-Party Services

The App integrates the following third-party SDKs for advertising and notification purposes:

Google AdMob

AdMob serves advertisements within the App. It may collect and process:

• Advertising ID (AAID) — a resettable, non-permanent device identifier
• Device model, operating system version, and language settings
• Network connection type and IP address (used for coarse geo-location and ad serving)
• App interaction data (ad impressions and clicks)

AdMob does not collect personal information. For details, see Google's Privacy Policy.

OneSignal

OneSignal is used for push notifications (e.g., app update alerts). It may collect:

• OneSignal-generated device identifiers
• Push notification token
• App version and OS version

OneSignal does not collect personally identifiable information. For details, see OneSignal's Privacy Policy.

4. Permissions

The App requests the following Android permissions:

• INTERNET — Required to load advertisements and perform remote maintenance checks.
• ACCESS_NETWORK_STATE — Used to check network connectivity before loading ads.
• POST_NOTIFICATIONS (Android 13+) — Used to deliver push notifications for app updates and important alerts. You can disable notifications at any time through your device settings.

5. Data Storage and Security

All calculation history is stored locally in a SQLite database on your device. No calculation data is ever transmitted off-device. You may delete your history at any time from the History screen using the Clear History option.

6. Children's Privacy

The App is not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will promptly delete such information.

7. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be reflected in the "Last Updated" date above. Continued use of the App after changes constitutes acceptance of the updated policy.

8. Contact Us

If you have any questions about this Privacy Policy, please contact us using the Play Store listing mail.