Privacy Policy
Last updated: 2026
What we collect
When you create an account, we collect your name and email address (via our authentication provider). As you use Qublem, we record your practice activity — which questions you attempt, whether you got them right, how long you spent, and hints used — to power the adaptive difficulty system and your progress dashboard. If you submit a report or feedback form, we collect the name, email, and (optionally) phone number you provide.
How we use it
Your practice data is used solely to personalize your experience — matching you to appropriately difficult questions and showing your own progress. We do not sell your data to third parties.
Third-party services
We use Clerk for authentication and Vercel/Neon for hosting and database infrastructure. These providers may process your data as part of delivering their services to us.
Your choices
You can request deletion of your account and associated data at any time by contacting us through the feedback form.