Privacy policy

Last updated October 22, 2026

The site keeps only what the exams need to work:

• Your checkout email, your Stripe receipt number and a backup key for each purchase, so you can restore your exams on another device. Stripe shares these with us when you pay.
• A random ID for each browser you log in from, so only one login per purchase is active at a time and unusual sharing can be spotted.
• Your answers, flags, highlights and timing for each block, so your progress follows you between devices, along with the scores of your earlier attempts.
• If you download the free study guides, the email you enter and whether you asked for updates about new guides and exams. You can ask to be removed at any time.
• The score for each block you finish, which shows which topics students struggle with so the questions can be improved. Free sample scores are stored with only the random device ID.

Your browser also keeps this information in its local storage on your device. There are no ads, tracking cookies or analytics scripts on this site, and your information isn't sold or shared. The site is hosted on Cloudflare, which handles basic request data such as IP addresses to run and protect the site. Payments are processed by Stripe under Stripe's privacy policy. To have your saved progress, scores or email deleted, email [email protected] with your checkout email.