Privacy Policy
Last updated: January 2026
The Short Version
Protocol 21 does not collect, store, or share any personal data. Period. Your practice sessions, scores, and progress stay on your device.
1. Information We Collect
We don't collect any personal information. Protocol 21 is designed to work entirely offline. All your training data, progress, and settings are stored locally on your device and never transmitted to our servers.
2. Data Storage
All app data is stored locally on your device using standard iOS/Android storage mechanisms. This includes your practice history, preferred counting systems, and app settings. If you delete the app, all data is permanently removed.
3. Third-Party Services
Protocol 21 does not integrate with any third-party analytics, advertising, or tracking services. We don't use cookies, pixels, or any form of user tracking on our app or website.
4. App Store Data
When you download Protocol 21 from the Apple App Store or Google Play Store, those platforms may collect their own data according to their respective privacy policies. We do not have access to this information.
5. Children's Privacy
Protocol 21 is intended for users 18 years of age or older. We do not knowingly collect information from children. The app is designed for adult educational purposes related to card counting and gambling strategy.
6. Changes to This Policy
If we ever change our privacy practices (which would only be to collect less data, not more), we will update this page and notify users through an app update.
7. Contact Us
Questions about this Privacy Policy? Reach out to us at: mike@protocol21blackjack.com