Last updated:
Zanshin ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.
Privacy by Design: Your health and fitness data is stored exclusively on your device. We never share your workout data with third parties.
We collect the following health and fitness information:
Purpose: App Functionality - to display real-time workout metrics, calculate training zones, and enable workout tracking.
Storage: All health and fitness data is stored locally on your device. With your permission, workout data can be exported to the Apple Health app.
Linked to Identity: No - We do not collect any information that can identify you personally. No user accounts are required.
We collect anonymous usage analytics through Firebase Analytics (Google):
Purpose: Analytics - to understand how users interact with the app, measure feature effectiveness, and plan improvements.
Linked to Identity: No - All analytics data is anonymous and cannot be used to identify you.
Firebase Analytics automatically collects device identifiers (IDFV - Identifier for Vendor) to associate analytics events with a device.
Purpose: Analytics only - to measure user behavior and app performance.
Linked to Identity: No - Device identifiers are anonymous and not linked to your personal information.
Used for Tracking: No - We do not use device identifiers for cross-app tracking or advertising purposes.
We use the information we collect for the following purposes:
We do not use your information for:
All health and fitness data is stored locally on your device using Core Data. This data never leaves your device unless you explicitly choose to export it to the Apple Health app.
Analytics data is sent to Firebase Analytics (Google) using industry-standard encryption. This data is anonymous and cannot be used to identify you.
We use Firebase Analytics to collect anonymous usage statistics. Firebase Analytics uses anonymous identifiers and does not collect personally identifiable information. For more information about how Google handles data, please see Google's Privacy Policy.
You have the following rights regarding your data:
Zanshin is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13.
We may update this Privacy Policy from time to time. Any changes will be reflected in the app's next version, and the "Last updated" date at the top of this page will be revised accordingly.
If you have any questions about this Privacy Policy or our data practices, please contact us at: