Privacy Policy

Introduction

Big Integer Calculator ("we," "our," or "us") respects your privacy. This Privacy Policy explains how we collect, use, and protect information when you use our mobile application.

Information We Collect

Automatically Collected Information

1. Advertising Data (via Google AdMob)
   • Device identifiers (Advertising ID)
   • IP address
   • Device information (model, OS version)
   • App usage data
   • Ad interaction data
2. In-App Purchase Data (via Google Play Billing)
   • Purchase history
   • Transaction information
   • Subscription status

Locally Stored Information

• App preferences (premium status, calculation count)
• Stored locally on your device using SharedPreferences
• NOT transmitted to external servers

How We Use Information

We use the collected information for:

1. Advertising Purposes
   • Display relevant advertisements to free users
   • Measure ad performance
   • Prevent fraud
2. Premium Features
   • Verify subscription status
   • Provide ad-free experience to premium users
   • Process in-app purchases
3. App Functionality
   • Track calculation count for interstitial ad display
   • Remember premium subscription status
   • Improve user experience

Third-Party Services

We use the following third-party services that may collect information:

Data Sharing

• We do NOT sell your personal information to third parties
• Information may be shared with:
  • Google AdMob (for ad serving)
  • Google Play (for payment processing)
  • As required by law

Children's Privacy

Our app is not directed to children under 13. We do not knowingly collect personal information from children under 13. If we discover we have collected such information, we will delete it immediately.

User Rights

You have the right to:

1. Opt-out of Personalized Ads
   • Visit Ad Settings
   • Adjust ad personalization preferences
2. Purchase Premium
   • Remove ads entirely by subscribing to premium
   • Choose monthly ($1.99) or lifetime ($14.99) options
3. Restore Purchases
   • Restore premium status on new devices
   • Access "Restore Purchases" in premium dialog
4. Delete App Data
   • Uninstall the app to delete all locally stored data
   • Contact Google Play for purchase history deletion

Data Security

• Local data stored securely on your device
• In-app purchases processed through Google Play's secure infrastructure
• We do not store payment information

Data Retention

• Local Preferences: Stored until app is uninstalled
• Ad Data: Managed by Google AdMob per their policies
• Purchase Data: Managed by Google Play per their policies

Your Choices

1. Disable Personalized Ads:
   Android Settings → Google → Ads → Opt out of Ads Personalization
2. Remove Ads Completely:
   Purchase premium subscription within the app
3. Delete All Data:
   Uninstall the application

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of material changes by:

• Updating the "Last Updated" date
• Providing notice within the app (for significant changes)

Compliance

This privacy policy complies with:

• Google Play Developer Policies
• Google AdMob Policies
• Google's EU User Consent Policy
• COPPA (Children's Online Privacy Protection Act)

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