Pepperjack keeps your lists on its own secure sync backend, tied to the account you sign in with. That's what lets a change you make on the couch show up in someone else's hand in the aisle, seconds later.
What this means in practice
- One tap to sign in. Your account is anchored to Sign in with Apple or to your phone number. There's no password to invent and none to reset.
- Sharing is invite-only. A shared list is visible to the people you invite and nobody else.
- Sync is automatic and usually instant. Changes travel from your device to Pepperjack and out to everyone else on the list.
- Your data follows your account. New phone, same lists — sign in and everything is there.

What else Pepperjack's servers do
Beyond storing your lists, Pepperjack looks up aisles and prices at your store, reads items out of photos you scan, and delivers Live Activity updates. See What Pepperjack can see for the full breakdown.
Requirements
- An internet connection. Changes you make offline queue up and sync as soon as you're back.
- Sign in with Apple, or a phone number you can receive a text at.