Ask HN: Would you use an app that optimizes nutrition and minimizes cost?

I'm making an app which finds the cheapest recipe to buy based on current grocery store prices near you and what food you have already. It can also optimize nutrition, and I have plans to support keto, diabetic, pre-diabetic, vegan, vegetarian, and many more types of diets.

Optimizing nutrition in this context means to optimally choose foods which satisfy your macros (i.e. the Stiegler diet), but it can also include choosing where proteins are derived (e.g. from a chicken instead of canned vegetables) or avoiding certain ingredients or ingredients with undesirable subcomponents (e.g. starches.)

Purely optimizing nutrition means that the food is somewhat bland, but choosing the cheapest recipe could be more tasty.

Would you use this app? If so, would you pay to use it?