RunIntensity Privacy Policy

1. Introduction

Zero Di, LLC ("Zero Di," "we," "us," or "our") develops RunIntensity, a training load management app for runners. This Privacy Policy explains how we collect, use, and protect your information when you use RunIntensity on iOS.

2. Information We Collect

2.1 Account Information

When you sign in with Apple, we receive a unique user identifier. If you choose not to hide your email, we may also receive your email address. We use this solely to authenticate your account.

2.2 Health and Fitness Data

With your explicit permission, RunIntensity reads the following data from Apple HealthKit:

• Running workout sessions (distance, duration, type)
• Heart rate data during workouts
• Heart rate variability (HRV)
• Resting heart rate
• Sleep analysis data

This data is used to calculate your training load (TRIMP), workout intensity, stress levels, and readiness scores. RunIntensity does not write any data back to Apple Health.

2.3 User-Entered Data

You may manually enter:

• Soreness information via the body diagram
• Subjective wellness ratings (SAM mood/energy/motivation)
• Body metrics (weight, resting heart rate, max heart rate)
• Personal records and training preferences

2.4 Coach Features

If you link your account to a coach, your training data (workout summaries, readiness scores, soreness reports, and SAM ratings) may be shared with your coach through the app. You can unlink from a coach at any time.

3. How We Use Your Information

We use your information solely to:

• Calculate training load, intensity zones, and readiness
• Provide personalized training insights and phase recommendations
• Display workout history and personal records
• Enable coach-athlete communication features
• Authenticate your account

4. Data Storage and Security

Your health and fitness data is processed on your device and stored securely in our cloud infrastructure. We use industry-standard encryption for data in transit and at rest. We do not sell, rent, or share your personal or health data with third parties for advertising or marketing purposes.

5. Data Sharing

We do not share your data with third parties except:

• With your coach, if you voluntarily link your account to a coach
• When required by law or legal process
• To protect the rights, property, or safety of our users

6. Your Rights and Choices

• HealthKit Permissions: You can revoke HealthKit access at any time in iOS Settings > Privacy & Security > Health > RunIntensity.
• Account Deletion: You can request deletion of your account and all associated data by contacting us at privacy@zerodi.net.
• Coach Unlinking: You can unlink from a coach at any time in the app's Settings.
• Data Export: Contact us to request a copy of your data.

7. Children's Privacy

RunIntensity is not directed at children under 13. We do not knowingly collect personal information from children under 13. If we learn that we have collected data from a child under 13, we will delete it promptly.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes through the app or by updating the "Last updated" date above.

9. Contact Us

If you have questions about this Privacy Policy or your data, please contact us:

• Email: privacy@zerodi.net
• Website: www.zerodi.net