Privacy Policy

Winter Arc Tracker · Klippers · Last updated: October 2, 2026

Winter Arc Tracker ("the app") lets you set daily tasks, log them, and see your numbers. There is no sign-up and no login. This policy explains what the app stores and why.

What we collect

• An anonymous ID. On first launch the app silently creates an anonymous account (Firebase Anonymous Authentication). It is not linked to your name, phone number or email.
• Your username — a random ID like WA-00042, or a name you choose.
• Your arc data — the tasks you create (name, category, type, unit, target), your daily logs (done / not done, and numbers such as hours of sleep), arc start and end dates, week results and badges.
• A push notification token, if you allow notifications, so we can send the weekly report.

We do not collect your location, contacts, photos, advertising ID, or any payment information. The app has no ads.

Why we use it

• To save your data on your phone and back it up to the cloud.
• To calculate your weekly report and the line "You did better than X% of people this week". This is computed from everyone's week averages; it never shows anyone's username, rank or individual results.
• To send at most three kinds of notifications: a daily 9 PM reminder (scheduled on your phone), the weekly report on Sunday, and badges you earn.

Where it's stored

Data is stored on your device and in Google Firebase (Cloud Firestore), operated by Google LLC, encrypted in transit. Only your anonymous account can read your data. We never sell or share your data with third parties.

Retention and deletion

Your data is kept while your arc is active. Because there is no login, uninstalling the app or switching phones starts a fresh account and the old one can no longer be accessed from the app. To have your cloud data deleted, email us with your username and public ID (shown on the Me tab) and we will delete it within 30 days.

Children

The app is not directed at children under 13 and we do not knowingly collect their data.

Contact

Questions or deletion requests: contactklippers@gmail.com