Introduction
Card Sense 888 - Probability Trainer ("we", "our", or "the app") is committed to protecting your privacy. This Privacy Policy explains how we handle information when you use our educational probability training application.
Key Point: We do NOT collect, store, transmit, or share any personal data. Your privacy is completely protected because we don't gather any information about you.
Information We Collect
Personal Information
We collect ZERO personal information. This includes:
- No names, email addresses, or contact information
- No location data or IP addresses
- No device identifiers or advertising IDs
- No user accounts or login credentials
- No payment information (the app is free)
- No photos, files, or media access
Usage Data
We do NOT track your usage. We do not collect:
- Analytics or usage statistics
- Crash reports or error logs
- Session data or activity tracking
- Search queries or interactions
Local Storage (On Your Device Only)
The app uses your browser's LocalStorage to save your progress locally on your device. This data:
- Stays on your device - Never sent to any server
- Includes: Your XP points, correct/incorrect answers, game statistics, and learning progress
- Is completely private - Only you can access it
- Can be deleted anytime - Clear your browser data to remove it
- Is not shared - Never transmitted to us or anyone else
Your Control: You can delete all stored data at any time by clearing your browser's cache and local storage.
No Third-Party Services
Card Sense 888 does NOT use any third-party services, including:
- No analytics services (Google Analytics, etc.)
- No advertising networks
- No social media integrations
- No tracking pixels or cookies
- No external APIs or data services
- No cloud storage or backup services
Offline Functionality
The app works 100% offline using a Service Worker for caching. This means:
- All app files are stored locally on your device
- No internet connection is required after initial download
- No data is transmitted when you use the app offline
- Your learning progress is saved locally, not in the cloud
Children's Privacy
Card Sense 888 is safe for all ages because:
- We collect NO information from anyone, including children
- There are no user accounts or registration
- No personal data is requested or stored
- The app is purely educational with no social features
Parents can safely allow children to use this app without privacy concerns.
Data Security
Since we don't collect any data, there is no data to secure or breach. Your learning progress stored locally on your device is protected by your device's security measures.
Your Rights
Because we don't collect any personal data, there is no data to:
- Access or download
- Correct or update
- Delete or remove
- Port to another service
You have complete control over your local progress data and can delete it anytime through your browser settings.
Changes to This Privacy Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last Updated" date. Since we don't collect contact information, we cannot notify you of changes directly.
Contact Information
If you have any questions about this Privacy Policy or the Card Sense 888 application, you can contact us:
Verification Methods
You can verify our privacy claims by:
- Reviewing the app's open-source code on GitHub
- Checking your browser's developer tools to verify no data is transmitted
- Using the app in offline mode to confirm it works without internet
- Inspecting your browser's local storage to see what data is stored
Summary
Card Sense 888 - Probability Trainer is completely private:
- ✅ No data collection
- ✅ No tracking or analytics
- ✅ No third-party services
- ✅ No internet required (after download)
- ✅ All progress saved locally on your device
- ✅ 100% educational, 0% surveillance