Privacy Policy
Last updated: September 22, 2026
No accounts
SkyDrill has no sign-up and does not ask for your name, email, or any personal information to use the practice questions.
Study progress stays on your device
Which questions you have answered correctly or missed is stored in your browser's local storage. It is never sent to us. Clearing your browser data, or using the "Reset progress" button, deletes it.
Analytics
We use privacy-respecting, aggregate analytics (Vercel Analytics, and Google Analytics 4 if enabled) to see which pages are visited and from which country. These do not identify you personally. We do not run advertising networks or sell data.
If you email us about an error, we use your address only to reply. We do not add it to any list.
Contact
Shikakumon · hello@shikakumon.com