Privacy Policy

Effective Date: May 3, 2026

DayStride is designed to help you plan, track, and improve your training while keeping your personal data private. This Privacy Policy explains what information DayStride accesses, how it is used, and the choices you have.

1. Privacy Principles

DayStride is built on three core principles:

  • Your data stays on your device by default
  • You control what data is shared and when
  • Your health and training data is never sold or used for advertising

2. Information We Access

Depending on the features you use, DayStride may access the following types of information:

a. Health and Fitness Data (via Apple Health)

With your explicit permission, DayStride may read selected data from Apple Health, such as:

  • Workouts and activity data
  • Heart rate and heart rate variability (HRV)
  • Sleep data
  • Energy expenditure and related fitness metrics

This data is used only to display your training history, support planning and coaching features, and generate insights about recovery, fatigue, and performance. DayStride does not write data to Apple Health unless explicitly enabled in the app.

b. Data You Enter

DayStride stores information you choose to enter, including:

  • Training sessions and plans
  • Habit tracking and check-ins
  • Pain, soreness, and recovery inputs
  • Notes and journal entries

c. Device and App Data

We may collect limited technical information such as app version, device type, crash logs, and error diagnostics. This information is used only to improve app reliability and performance.

3. How Your Data Is Stored

  • Your data is stored locally on your device by default
  • If you enable iCloud sync, your data is stored in your private iCloud account using Apple CloudKit
  • DayStride does not have access to your private iCloud database

4. AI Features and Data Use

DayStride includes AI-powered features to provide insights, answer questions, and support training decisions.

a. On-Device First

Whenever possible, AI features run locally on your device.

b. Cloud AI Processing

Some AI features may use secure cloud processing to generate responses. When this happens:

  • Only the minimum necessary context is sent (such as recent workouts or check-ins)
  • Data is sent solely to generate the requested response
  • Data is not stored by DayStride after the response is generated
  • Data is not used to train AI models

c. No Background Collection

DayStride does not continuously send your data to AI services. Data is only processed when you actively use AI features.

d. Debugging Access (Consent Required)

In rare cases, you may choose to share additional data with DayStride for troubleshooting.

  • This will only occur with your explicit consent
  • The scope and duration of access will be clearly explained
  • You can revoke access at any time

5. Analytics

DayStride may collect limited usage analytics to understand how the app is used and to improve features.

  • Analytics data does not include your health data or journal content
  • Analytics is not used for advertising or tracking across apps

6. Data Sharing

DayStride does not:

  • Sell your personal data
  • Share your health data with advertisers
  • Use your data for cross-app tracking

Data is only shared:

  • With Apple (via HealthKit or CloudKit, as you enable)
  • With AI processing providers, only when you use AI features and only to generate responses

7. Your Choices

You can control your data at any time:

  • Revoke Apple Health permissions in the Health app
  • Disable iCloud sync in settings
  • Choose whether to use AI features
  • Delete your data by removing the app

8. Data Retention

  • Data stored on your device remains until you delete it
  • DayStride does not retain AI request data after responses are generated
  • If you opt into debugging, shared data is deleted after the issue is resolved

9. Security

DayStride uses platform-provided security features, including:

  • Apple device encryption
  • Secure CloudKit storage (if enabled)
  • Encrypted network connections for any cloud requests

10. Children's Privacy

DayStride is not intended for children under 13 and does not knowingly collect personal information from children.

11. Changes to This Policy

We may update this Privacy Policy from time to time. Updates will be posted at this URL with a revised effective date.

12. Contact

If you have questions about this Privacy Policy, contact: privacy@daystride.app