Privacy Policy

Last updated: 2025-09-20

This privacy policy describes how we collect, use, disclose, and protect your personal information when you use Wattgrid.app.

Information we collect

When you log in via your Strava account, we collect:

  • Your email address.
  • Your name.
  • Your weight.
  • Your sex.
  • Your FTP (functional threshold power).
  • Your recent cycling activities from Strava (going back 42 days).

Activity streams from Strava

To compute your performance metrics, we ingest certain per-activity data streams from Strava:

  • Time (seconds)
  • Watts (power).
  • Altitude (meters)
  • Distance (derived from lat/lng)

We also store minimal activity metadata necessary to operate the service: activity type, start date/time, elapsed time, average power and normalized power values if provided by Strava.

How we use your information

We use your information solely to:

  • Calculate your global power score from your cycling activities.
  • Compute rolling power peaks from power streams (time + watts)
  • Compute VAM-based estimates from time, altitude and distance to estimate your climbing performance.
  • Allow you to join races and be seeded based on that score.

Only the computed power score is made public. All other data is private and visible only to you.

What we do not store or use

  • We do not store GPS coordinates (lat/lng). They are only used to compute distance and are then discarded.
  • We do not collect live location or background location data.
  • We do not use your data for advertising.

How we protect your information

We implement appropriate security measures to protect your information from unauthorized access, use, disclosure, alteration, or destruction.

We use encryption in transmission and store data securely. We do not use your information for purposes other than stated here.

Cookies

We use a single cookie that is strictly necessary for login and authentication purposes.

Your rights

You have the right to access, update, or delete your information. You can also withdraw consent or request portability of your data. Contact us at [email protected].

Delete your account

  • You can delete your account at any time from your Profile page by clicking “Delete account”.
  • When you delete your account, we permanently delete your user profile and all activities stored by Wattgrid, and remove you from all races.
  • This does not delete your activities on Strava or data held by Strava.
  • This action is permanent and cannot be undone.

Data retention

We keep your data until you delete your account, or as required by law, whichever comes first. Activity syncing is limited to a rolling 42-day lookback window.

Legal basis

Processing is based on your consent when you click “Connect with Strava” and “Compute my power score.” We comply with the GDPR and the Norwegian Personal Data Act.

Changes to this privacy policy

We may update this policy from time to time. We will notify you of material changes by posting the updated version on our site. You should review this policy periodically.

Contact

If you have any questions or wish to exercise your rights, contact us at [email protected].