MustDuo Privacy Policy
Last Updated: Feburary 18, 2026
Effective Date: January 1, 2026
1. Introduction
MustDuo LLC (“we”, “us”, or “our”) is committed to protecting your privacy. This Privacy Policy explains how we collect, use, store, and protect your personal information when you use the MustDuo fitness app (“App”) and our connected fitness tracker device (“Hardware”)—collectively referred to as the “Services.” By using our Services, you consent to the practices described in this policy. We may update this Privacy Policy from time to time, and we will notify you of significant changes by posting the new policy on our website or through the App. Your continued use of the Services after such updates indicates your acceptance of the revised policy.
2. Company Information
MustDuo LLC
23936 Old Pomegranate Rd, Yorba Linda, CA 92887, United States
Email: [email protected]
3. Data We Collect
We collect the following types of data to provide and improve our Services:
- Personal Information: Name, email address, age, height, and weight.
- Fitness Goals and Preferences: Information about your fitness objectives and workout preferences (e.g., workout type, frequency, intensity).
- Health-related Data: Workout details such as repetitions (reps), sets, body weight, and performance history.
- Device Data: Sensor data from the Hardware, including orientation, acceleration, direction, and timestamps (collected via IMU sensors). This data is processed and stored in the App and on our cloud servers.
- Usage Data: Information about how you interact with the App, such as features used and time spent on activities.
- Technical Data: Device identifiers, IP address, operating system, and crash reports (collected automatically when you use the App).
4. How Data is Collected
We collect data in the following ways:
- Account Creation: When you sign up manually or through integrations with Apple Health or Google Fit, we collect your personal and health-related data.