Battery is a smartphone app that enables users to search and pick the right health supplements individually. Battery App allows users to search for a health supplement by text, product image, and barcode. Battery App shows if the supplements' total amount of each nutrient (vitamins, minerals, and phytonutrients) is adequate, lower, or higher than the required level based on sex and age. If lower, Battery App recommends an additional product using an AI algorithm. Battery App builds and supports an interactive user community where healthcare professionals also can answer and comment.