By using the application “Tetra", we assume that you agree to this Privacy Policy.

"Tetra" never acquires and collects personal information.

However, we use the following third party advertising service.

· AdMob

  Google Privacy & Terms Advertising https://policies.google.com/technologies/ads

We also use the following third party analysis service to analyze application usage situation.

· Google Analytics for Firebase

  Terms of Service https://firebase.google.com/terms/analytics/

  Google's privacy policy https://policies.google.com/privacy