Privacy Policy

1. Information We Collect

The App may collect the following information:

• Device information (OS, device type, app version)
• Crash reports and error logs
• Language and region settings
• App usage statistics (anonymous)

2. Calculation Data

All calculation data, including history tapes, labels, expressions, and results, is stored exclusively on your device. This data is never uploaded to servers, transmitted over the network, or shared with any third party.

3. How We Use Information

We use collected information for:

• Providing and improving app features
• Fixing bugs and improving performance
• Enhancing and customizing user experience
• Analyzing statistics for service improvement

4. Information Sharing

We do not share personal information with third parties except:

• With your consent
• When required by law
• To protect life, body, or property

5. Third-Party Services

To improve app quality, we may use the following external services:

• Google Analytics (anonymous usage statistics)
• Firebase Crashlytics (crash reporting)
• Google AdMob (advertising)

These services handle information according to their respective privacy policies.

6. Advertising

The free version of the App displays advertisements through Google AdMob. AdMob may collect device information and use cookies to provide personalized ads. You can opt out of personalized advertising in your device settings. Ads are only displayed at the bottom of the screen and do not appear in the calculation editor area.

7. Data Storage and Deletion

All calculation data and app settings are stored locally on your device. This data is completely deleted when you uninstall the app. No calculation data is stored on external servers.

8. Children's Privacy

The App is suitable for all ages and does not intentionally collect personal information from children under 13. Parents should appropriately supervise their children's app usage.

9. Security

We implement appropriate technical and organizational measures to ensure information security. However, we cannot guarantee complete security.

10. Policy Changes

This Privacy Policy may be updated as needed. We will notify you of significant changes within the app.

11. Contact Us

For questions about this Privacy Policy, please contact: