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Privacy Policy

Last updated: June 18, 2026

1. Overview

Boxing Timer ("the Service") is operated by RootlessStudio (Kohei Sakashita). This Privacy Policy explains how we collect, use, and protect information when you use our Service.

2. Information We Collect

We do not collect personal information without your consent. The following data is stored locally in your browser only and is never transmitted to our servers:

  • Timer settings (round time, rest time, rounds)
  • Today's Focus notes and reference links
  • Saved presets (Pro users)
  • Pro plan activation status and license key

3. Cookies and Tracking

The Service uses browser localStorage to save your preferences. We may use third-party services such as Google AdSense, which may set cookies on your device to serve personalized advertisements. You can opt out of personalized ads via Google Ad Settings.

4. Payment Information

Pro plan purchases are processed by Polar.sh. We do not store your payment information. Please refer to Polar's Privacy Policy for details on payment data handling.

5. Third-Party Services

We may use the following third-party services, each governed by their own privacy policies:

  • Polar.sh — payment processing
  • Vercel — hosting
  • Google AdSense — advertising (free tier)

6. Data Retention

All data stored via localStorage remains on your device and can be cleared at any time by clearing your browser data. We do not retain personal data on our servers.

7. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated date.

8. Contact

For privacy-related inquiries, please contact us at support@rootless-studio.com.