Last Updated: October 9, 2025
TL;DR: We don't collect, store, or sell your personal information. Your data stays on your device. This tool is free, requires no signup, and respects your privacy.
We do NOT collect any personal information such as:
Local Storage: We use your browser's localStorage to save your calculator preferences (work hours, cycle length, break duration). This data:
Analytics (Optional): We may use basic analytics tools (like Google Analytics) to understand:
This data is anonymous and aggregated. We cannot identify individual users.
We use localStorage (not cookies) to remember your calculator settings. These are essential for the tool to function properly.
We use Google AdSense to display advertisements. Google may use cookies and similar technologies to:
You can control ad personalization through Google Ad Settings.
If analytics are enabled, we may use cookies to track anonymous usage statistics. You can opt out of Google Analytics using the Google Analytics Opt-out Browser Add-on.
The minimal data we collect is used solely to:
We do NOT:
We use Google AdSense to display ads. Google's use of advertising cookies enables them to serve ads based on your visits to this site and other sites. Learn more about Google's privacy practices:
This site is hosted on Vercel. They may collect technical information (IP addresses, browser types) for security and performance purposes. See Vercel's Privacy Policy.
You have the right to:
Since we don't collect or store personal data on our servers, there's minimal risk of data breaches. Your calculator preferences stored in localStorage are protected by your browser's security measures.
This tool does not knowingly collect information from children under 13. If you are under 13, please do not use this site without parental supervision.
This site is hosted in the United States. If you access it from outside the US, your information may be transferred to, stored, and processed in the US.
We may update this privacy policy from time to time. Changes will be posted on this page with an updated "Last Updated" date. Continued use of the site after changes constitutes acceptance of the updated policy.
California residents have additional rights under the California Consumer Privacy Act (CCPA):
If you're in the European Economic Area (EEA), you have rights under the General Data Protection Regulation (GDPR):
If you have questions about this privacy policy or our data practices, you can contact us via GitHub:
Bottom Line: Your privacy matters. This is a simple, free tool designed to help you be more productive. We don't need your personal data to do that, and we don't want it. Use the tool with confidence.