Privacy policy
This page explains what Sharpen (made by Watel, "we") collects and why. Short version: no account, no sign-up, and the quiz never leaves your phone.
The brain test
Your answers and scores are calculated in your browser and are not sent to or stored on our servers. When you leave the page they are gone.
Advertising measurement
We use the Meta Pixel to see whether our ads lead people to take the test and pre-order. It sets a cookie and sends Meta standard events (page view, test started, test completed, checkout started, purchase) together with your browser and device information. It does not receive your quiz answers. You can control this in your Meta ad settings or by using a browser that blocks tracking. We do not use any other analytics.
Payments
If you pre-order, Stripe collects your name, email address and payment details under its own privacy policy. We receive your name, email address, the plan you bought and a reference that tells us which ad brought you to the site. We never see your card number.
We use the email address from your purchase to send your receipt, your daily challenge link each morning for the period you bought, and to process refunds. Nothing else, and we never sell or share it.
Keeping and deleting data
Purchase records are kept for as long as accounting law requires. Everything else can be deleted on request: email tonje@trymuse.com and we will confirm within 7 days.
Children
Sharpen is for adults. We do not knowingly collect data from anyone under 16.