Paste the two values from your Supabase project (Settings → API). They're stored on this device only, and the same two go on every device you want in sync.
Sign in with your email and password. Use the same email on your phone and desktop to see the same list.
No password set yet, or it's not working? Send yourself a sign-in code or link instead — the same email above is used.
On desktop you can click the link in the email. On an iPhone/iPad app added to your Home Screen, the emailed link opens Safari instead of this app — use the 6-digit code below, or copy the link from the email and paste it in here.
Tap a category to grant or revoke it for that person. Changes save instantly.