Techniques for guideline-based food purchase management are provided. The techniques include generating a personalized set of nutrition guidelines for a user, generating a user profile for the user, wherein the user profile comprises health information and nutrition preferences, and using the personalized set of nutrition guidelines and the user profile to generate a guideline-based shopping list for the user. Techniques for generating location-based food purchase guidance are also provided. The techniques include obtaining a shopping list of food items and a list of stores to be considered in connection with the food items on the shopping list, using the shopping list, list of stores, a store location map and inter-store routing guidance to generate an inter-store shopping route, and generating an in-store shopping route, for each of the stores in the inter-store shopping route, based on the shopping list, intra-store routing guidance and a floor plan for the store.