Most meal planners hand you a plan, then send you shopping for everything on it. Swaplate flips that: tell it what's already in your fridge, and the AI builds your plan around those ingredients first - less waste, less money down the drain. Don't like today's dinner? Swap regenerates just that one meal, keeping your macros and the rest of the week untouched. Don't eat a specific ingredient? Expand substitutes right in the recipe (turkey → chicken) - no full recalculation needed.