Privacy Policy

1. Who We Are

Sprint Calculator ("we", "us", "our") is a free web tool built and operated by Albert Romeo and Adrià Alfonso, based in Barcelona, Spain. Our website is accessible at sprint-calculator.onrender.com.

We are committed to protecting your privacy. This policy explains what information we collect, how we use it, and your rights regarding your data.

2. Information We Collect

We do not collect any personally identifiable information (such as your name, email address, or account credentials) directly through our website. However, the following data may be collected automatically through third-party services we use:

• Usage data: Pages visited, time spent on site, browser type, device type, approximate geographic location (country/city level), and referring URLs.
• Performance data: Times you enter into the Sprint Calculator are processed locally or via our server to generate predictions. We do not store or log individual prediction inputs.
• Cookies and tracking technologies: We use cookies set by Google Analytics and Google AdSense (see Section 4).

3. How We Use Your Information

The data collected through third-party services is used for the following purposes:

• To understand how visitors use our website and improve the experience (Google Analytics).
• To serve relevant advertisements and support the free operation of this service (Google AdSense).
• To monitor website performance and stability (Render hosting platform).

We do not sell, rent, or share any personal data with third parties for their own marketing purposes.

4. Cookies

Our website uses cookies — small text files stored on your device — through the following services:

• Google Analytics: Collects anonymised data about how visitors interact with our site (pages visited, session duration, device info). You can opt out via Google's opt-out tool.
• Google AdSense: Uses cookies to display ads that may be relevant to you based on your browsing behaviour. You can manage your ad personalisation settings at adssettings.google.com.

You can control or disable cookies through your browser settings at any time. Please note that disabling cookies may affect the functionality of some features.

5. Third-Party Services

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

• Google Analytics — policies.google.com/privacy
• Google AdSense — policies.google.com/privacy
• Render (hosting) — render.com/privacy
• Amazon Associates (affiliate links on our Gear page) — Amazon Privacy Notice

When you click an affiliate link on our Gear page, you will be redirected to Amazon. Any purchases made through these links may earn us a small commission at no extra cost to you.

6. Your Rights (GDPR)

If you are located in the European Union or European Economic Area, you have the following rights under the General Data Protection Regulation (GDPR):

• The right to access any personal data we hold about you.
• The right to request correction or deletion of your data.
• The right to object to or restrict the processing of your data.
• The right to data portability.
• The right to withdraw consent at any time.

Since we do not directly collect personal data, most of these rights apply to the third-party services listed above. You can exercise your rights with those providers directly via the links in Section 5.

7. Data Retention

We do not store personal data on our own servers. Google Analytics retains data for 26 months by default. Render may retain server logs for a limited period for security and debugging purposes.

8. Children's Privacy

Sprint Calculator is not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will take steps to delete it.

9. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for legal reasons. We will indicate the date of the last update at the top of this page. Continued use of our website after any changes constitutes acceptance of the updated policy.