The single-profile assumption is the bug
Almost every meal planner ships with a single 'you' at the center: your goals, your allergies, your dislikes, your macros. That assumption is fine until you cook for someone else. Then the app forces you to either pick whose needs to honor (a recipe for resentment), or to maintain two apps and reconcile them in your head. PlateHelix flips the model. The household is the unit. Each person inside it has their own structured profile and privacy mode. Recipes are evaluated against everyone selected for the meal, and the assistant tells you exactly who it's optimizing for.