What We Collect

When you create an account, we collect your email address. When you use SludgeSchool, we store your practice progress (answers and scores) so you can track your improvement over time.

How We Use Your Data

Your data is used solely to provide the SludgeSchool service — delivering practice questions, tracking your progress, and processing payments. We do not sell your data to third parties.

Third-Party Services

We use the following third-party services:

Supabase — authentication and database hosting
Stripe — payment processing
Vercel — application hosting
Fathom Analytics — privacy-focused website analytics (no cookies)
Microsoft Clarity — session recordings, heatmaps, and usage analytics to help us understand how visitors interact with SludgeSchool and improve the experience. Clarity may collect clicks, scroll behavior, and mouse movements. Learn more at Microsoft Clarity Terms.

Cookies

We use essential cookies for authentication and session management. Microsoft Clarity sets additional cookies to support session recording and usage analytics. Our other analytics provider (Fathom) is cookie-free.

Data Deletion

You can request deletion of your account and all associated data by contacting us at support@sludgeschool.com.

Changes

We may update this policy from time to time. Significant changes will be communicated via email or a notice on the site.