Privacy Policy

Our Commitment to Your Privacy

At StudyPlanner Pro, we take your privacy seriously. This policy explains our approach to data collection and storage.

Zero Data Collection

We do not collect, store, or transmit your data to our servers.

• All statistical calculations are performed entirely in your web browser
• Your input data never leaves your computer
• We have no backend database storing user data
• We do not track individual users or their calculations

Local Storage Only

For your convenience, we use your browser's local storage (IndexedDB) to save:

• Your calculation history (last 30 calculations)
• Saved study projects (if you choose to create them)

Important: This data is stored only on your device and is never sent to our servers. You can clear this data at any time through your browser settings.

URL Parameters for Sharing

When you use the "Share" button, your calculation inputs and results are encoded in the URL. This allows you to:

• Bookmark your calculations
• Share specific calculations with colleagues
• Restore calculations by visiting the same URL

This happens entirely client-side. The URL parameters are not logged or stored on our servers.

Analytics

We use Ahrefs Web Analytics for basic website traffic analysis (page views, referrers). This analytics service respects user privacy and does not track personally identifiable information. No cookies are set for analytics purposes.

Third-Party Services

StudyPlanner Pro does not integrate with third-party services that collect user data. All functionality is:

• Self-contained in your browser
• Uses open-source statistical libraries (jstat, simple-statistics)
• Does not make external API calls with your data

Cookies

We do not use cookies to track users. The only cookies that may be set are essential for basic website functionality.

Your Rights

Since we don't collect your data, there's nothing for us to delete, export, or modify. You have complete control over your data:

• Delete: Clear your browser's local storage or history at any time
• Export: Use the "Copy Results" or "Export" features in calculators
• Control: Your data never leaves your device without your explicit action (sharing URLs)

Children's Privacy

Our service is designed for researchers, students, and professionals. We do not knowingly collect any information from anyone, including children under 13.

Changes to This Policy

We may update this privacy policy from time to time. Any changes will be posted on this page with an updated revision date.