Effective November 5, 2026
Cookie Policy
| Name | Type | Category | Purpose | Duration |
|---|---|---|---|---|
| pk_session | cookie | essential | Keeps you signed in so you don't have to enter your password on every page. | 30 days or until you sign out |
| pk_oauth_state | cookie | essential | Protects Google sign-in by checking that you started the sign-in, not a spoofed page. | 10 minutes |
| prs_ref, prs_ref_info | cookie | essential | If you arrive through a friend's referral link, remembers their code so your discount and their reward are recorded when you sign up. | 60 days or until you sign up |
| pk_consent | browser storage | essential | Remembers your choice in the cookie banner so we don't have to ask again. | 12 months |
| pk_guest | browser storage | essential | Keeps results you achieved without an account, only in your browser. They can be moved to your account when you sign up. | Until you move them to an account or delete them |
| pk_theme | browser storage | essential | Remembers whether you chose the light or dark theme. | Until deleted |
| ph_phc_..._posthog | cookie | analytics | Website analytics with PostHog (EU). Set and run only after you accept analytics cookies. | 12 months |
Change your choice here:
2. Which cookies we use
We need essential cookies and browser storage entries to keep you signed in and to remember your results before you sign up and your choices. They do not require consent. We set analytics cookies only with your consent.
Our essential cookies are our own. We do not use any other third-party cookies. The table on this page lists each item with its purpose and how long it is kept.
If you sign in with Google, Google's own cookie rules apply on Google's pages.
3. Analytics and marketing
We measure traffic on public pages with PostHog (servers in the European Union). It starts only after you allow analytics cookies in the cookie banner. Without your consent, it does not load and stores nothing. You can withdraw consent at any time; measurement then stops and its data in your browser is deleted.
We also measure basic traffic anonymously on our own server, with no cookies, no browser storage and no stored IP address, so it does not need consent. What exactly we record is described in our Privacy Policy.
We do not use marketing cookies: we do not track you on other websites and we do not show ads. We do not sell your personal information or share it for cross-context behavioral advertising.
4. How to change your choice
You can change your choice at any time with the "Cookie settings" link in the website footer. Withdrawing consent is as easy as giving it, and it does not affect anything that happened before.
We remember your choice for 12 months, then ask again.