One phone, one person: what changes when a device knows who's holding it

A household app with one shared login has a small, specific annoyance built into it: every phone shows the same person's stuff. Mom's phone, Dad's phone, the kid's old hand-me-down — technically they're all "the household account," and practically they all lead with whoever set the account up. Open the app on Dad's phone and see Mom's taste profile front and center, and the app hasn't done anything wrong. It's just guessed the wrong person.

The fix isn't separate logins — a household still shares one plan, one list, one set of allergen rules, and that's exactly right. The fix is asking each phone, once, who's actually holding it.

One question, asked once per device

The first time a household has more than one phone on the app, each device asks "who's using this device?" — a tap-select list of the people already in the household roster, no typing. Pick yourself, and that device remembers. It's a deliberate, occasional choice made from Settings, not a profile switcher you're flipping between screen to screen.

What actually changes on your phone

Once a device knows who's holding it, the parts of the app that are naturally personal start leading with that person: the Home greeting, the taste-based recommendations, the lead cards and layout Home opens with. Dad's phone opens like it's Dad's; Mom's phone opens like it's Mom's. It's a small thing on paper and a noticeably better first five seconds every time you open the app.

What stays exactly the same on every device

The household's shared truth — the meal plan, the shopping list, the roster, and every allergen rule on it — is identical no matter whose phone you're looking at it on. A device profile personalizes what leads the screen; it does not create a private view or a second set of facts. Everyone in the household is still one login, one shared record, one safety gate that runs the same way for everyone.

Personalized, not private

Worth saying plainly: this isn't a privacy wall. Everyone shares one account, so anyone in the household who looks can still see anyone else's plan or list — a device profile changes what a phone leads with, not who's allowed to see what. If a household needs real separation between logins, that's a different, bigger thing than this, and Listahan doesn't claim to be that today.

A simpler screen for a kid's device

A kid's device can be set to kid mode from the same picker. It keeps the everyday app — the plan, the lists, the chores that are theirs — and quietly hides billing, subscription management, and household-admin rows that a kid's phone never needed to show in the first place. Nothing about the allergen gate or the household's safety rules changes; kid mode only simplifies what a kid's screen displays.