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.
Enter your email and send yourself a sign-in code or link. Use the same email on your phone and desktop to see the same list.
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.