Privacy Policy – Golden Calc

RDroid Apps ("we", "our", "us") operates the Golden Calc mobile application and related website services.

This Privacy Policy explains how information is collected, used, and shared when you use our calculator app or download it from our website.

a) Personal Information

We do not collect any personally identifiable information such as:

• Name
• Email address
• Phone number
• Contact information

b) Automatically Collected Information

When you use the Golden Calc app, certain information may be collected automatically, including:

• Device information (model, OS version, screen size)
• IP address (for approximate location and security)
• App usage statistics (feature usage frequency)
• Crash logs and performance data (to improve stability)
• Advertising ID (for ad personalization)

c) User-Generated Content

Golden Calc stores:

• Calculation History: Your calculation expressions and results are stored locally on your device
• Unit Conversion Preferences: Last used conversion categories are saved locally
• No Cloud Storage: All data remains on your device and is not uploaded to our servers

The app uses Google AdMob and may use other third-party advertising networks to display ads.

These ad networks may collect and use information such as:

• Advertising ID
• Device identifiers
• App usage patterns
• Approximate location (based on IP)
• Cookies or similar technologies

This information is used to:

• Show relevant ads
• Measure ad performance
• Prevent fraud and abuse
• Limit ad frequency

a) Local Storage Only

Golden Calc operates primarily offline. All your data including:

• Calculation history
• Unit conversion settings
• App preferences

...are stored locally on your device using Android's SharedPreferences and are never transmitted to our servers.

b) Calculation Processing

All mathematical calculations are performed locally on your device. No calculation data is sent to external servers.

c) Data Deletion

You can clear all app data at any time by:

• Using the "Clear" function within the app
• Clearing app data from Android Settings → Apps → Golden Calc → Storage → Clear Data
• Uninstalling the app (removes all locally stored data)

Golden Calc requests minimal permissions:

• INTERNET: Required for displaying ads
• ACCESS_NETWORK_STATE: To check network connectivity for ads

No Dangerous Permissions: The app does NOT request access to:

• Contacts
• Location (GPS)
• Camera
• Microphone
• SMS
• Storage (except for local app data)

Our website may use cookies or similar tracking technologies to:

• Analyze traffic
• Improve user experience
• Monitor downloads
• Remember user preferences

You can control or disable cookies through your browser settings.

This app may be distributed as an APK file downloaded directly from our website and may not always be available on the Google Play Store.

Users download and install the app at their own discretion. We verify the integrity of our APK files through SHA-256 checksums.

We do not sell or trade user data. Information may be shared only with:

• Advertising partners (Google AdMob)
• Analytics and crash reporting services (Firebase Crashlytics)
• Legal authorities if required by law

Third-Party Services:

• Google AdMob: Privacy Policy
• Firebase Analytics: Privacy Policy

This app is not intended for children under the age of 13.

We do not knowingly collect personal data from children.

Golden Calc is an educational tool suitable for students aged 13+ for learning mathematics and unit conversions.

We take reasonable measures to protect information from unauthorized access, alteration, or disclosure.

However, no method of transmission over the internet is 100% secure.

Security features include:

• Local data encryption (where supported by Android)
• Secure HTTPS connections for ad serving
• Regular security updates

Depending on your location, you may have the right to:

• Access personal information we hold about you
• Request correction of inaccurate information
• Request deletion of your information
• Opt-out of personalized advertising
• Withdraw consent (where applicable)

To exercise these rights, contact us using the information below.

We may update this Privacy Policy from time to time.

Any changes will be reflected on this page with an updated date.

We encourage users to periodically review this page for any changes.

1️⃣2️⃣ Contact Us

If you have any questions about this Privacy Policy, you can contact us at: