Privacy Policy

Last updated: March 27, 2026

RevisionCal is a browser extension that helps students track their daily revision progress using a visual calendar with tick, circle, and cross marks per subject. This policy explains how your data is handled.

What Data Is Stored

The extension stores only the data you create within it:

• Subjects you add (name and chosen color)
• Revision marks you set per day per subject (tick, circle, or cross)
• Exams you add (name, associated subject, and date)
• Your selected theme preference (light or dark mode)

This data is saved using Chrome's built-in local storage API (chrome.storage.local) so your data persists between sessions entirely on your own device.

What We Don't Collect

We do not collect or have access to any of the following:

• Personal information (name, email, address, etc.)
• Browsing history or website content
• Cookies or tracking identifiers
• Analytics or usage data
• Location data
• Financial or authentication information

Third-Party Sharing

Your data is never sent to any external server, third-party service, or analytics platform. There is no backend. The extension makes zero network requests.

Permissions Used

The extension requests only one permission:

• storage — Used to save and retrieve your subjects, revision marks, exams, and theme preference locally through Chrome's storage API. This is the only way your data is kept between sessions.

Remote Code

This extension does not load or execute any remote code. All code is bundled within the extension package.

Data Deletion

You can delete any subject, exam, or revision mark directly within the extension at any time. Uninstalling the extension will remove all stored data from your device completely.

Children's Privacy

This extension is designed for students of all ages. Since no personal data is collected or transmitted, it is safe for use by children. No account creation is required.

Changes to This Policy

If this policy is ever updated, the changes will be reflected on this page with an updated date at the top.