Last updated: July 17, 2026

Privacy Policy

What Nethletics does

Nethletics is a digital fitness tracker for browser movement. The extension measures scrolling, browsing activity, visited places, achievements, display settings, and profile information so it can show your activity inside the extension.

Data handled by the extension

The extension may store the following data in your browser:

Local storage by default

Nethletics stores activity data locally in your browser using Chrome extension storage. The extension works without an account. You can use Nethletics fully offline and locally.

Optional cloud account and sync

If you choose to create an account and sign in, Nethletics can sync selected activity and profile data to our cloud backend hosted on Supabase (EU region). This is optional and only happens when you sign in and enable sync.

Cloud data may include:

Cloud sync uses authenticated requests. Row-level security limits access so signed-in users can read and update only their own profile and activity records.

Support submissions

When you send a bug report or feature request from the extension, Nethletics may store the submission in our cloud database. This can include your user ID (if signed in), contact email, submission type, subject, message, extension version, and locale. Support submissions are used only to review and respond to feedback.

Leaderboards

If you participate in global or country leaderboards, aggregated distance totals and country contribution data may be stored and displayed in leaderboard views. Leaderboard participation requires a signed-in account.

Third-party requests

The extension may request favicon images from Google's favicon service to display website icons. That request can include the domain name needed to fetch the icon.

When you use cloud sync or sign in, the extension communicates with Supabase infrastructure to authenticate you and store synced data. Nethletics does not sell your data.

Permissions

The extension uses Chrome permissions such as storage, activeTab, scripting, and content scripts so it can measure scroll movement, show the in-page widget, open the injected popup, save activity locally, and sync when you are signed in.

Export and deletion

You can export activity data as JSON or CSV from Settings. You can clear the local cache or sign out from your account in the extension. Removing the extension may also remove local extension data depending on Chrome behavior. To request deletion of cloud account data, contact us at the email below.

Website storage

The marketing website stores your selected language in browser localStorage. See the Cookies page for details. The website does not require an account.

Children

Nethletics is not designed for children under 13. Do not use Nethletics if you are not allowed to use browser extensions in your jurisdiction or environment.

Changes

We may update this policy as the product changes. The date at the top shows when this draft was last updated.

Contact

Questions can be sent to hello@nethletics.com.