Privacy Policy
Last updated: January 2025
Introduction
At Certification Study Tracker (“we,” “our,” or “us”), we are committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our web application.
Our core principle: We believe in privacy-first design. We collect the minimum amount of data necessary to provide our service, and your study progress data never leaves your device unless you explicitly export it.
Data We Collect
We categorize data collection into two types:
Data Stored Locally (On Your Device)
- Study Progress: Your lesson completion status, selected certification/level, and target dates
- Preferences: UI preferences such as expanded/collapsed sections
This data is stored in your browser's localStorage and never transmitted to our servers. You have full control over this data and can export or delete it at any time.
Data We May Collect
- Analytics Data: Anonymous usage statistics (page views, session duration) via privacy-friendly analytics
- Technical Data: Browser type, device type, and screen size for compatibility purposes
We do not collect names, email addresses, IP addresses, or any personally identifiable information.
Data We Do NOT Collect
We want to be explicit about what we don't do:
- We do not require account registration
- We do not collect your name or email address
- We do not track your IP address
- We do not use fingerprinting or cross-site tracking
- We do not sell or share any data with third parties
- We do not store your study progress on our servers
Third-Party Services
We use the following third-party services:
Hosting (Vercel)
Our application is hosted on Vercel. Vercel may collect minimal technical data for service operation. See Vercel's Privacy Policy.
Analytics (Privacy-Friendly)
We use privacy-friendly analytics that do not use cookies or collect personal information. This helps us understand how the application is used to make improvements.
Advertising (Google AdSense)
We display advertisements through Google AdSense to support the free service. Google may use cookies to serve personalized ads based on your browsing history. You can opt out of personalized advertising in our cookie consent banner. See Google's Privacy Policy.
Your Rights & Data Control
You have complete control over your data:
Export
Download your complete study progress as a JSON file at any time using the Export button.
Delete
Clear all your data using the Reset button or by clearing your browser's localStorage.
Portability
Import your exported data on any device to continue tracking your progress.
Contact Us
If you have any questions about this Privacy Policy, please contact us at: