First, there is a personal food database that you, as a member of the site, can populate with all the foods you need. On this personal food database, you can share the entries (they will be public), or you can choose not to share, and you'll be the only one who can access the respective food under your account.
Publicly available to everyone. The United States Department of Agriculture (USDA) is one of the most, if not "the most" comprehensive list of foods available online. They are publishing periodic updates of the databse. The one used on our site, is version "26
". The application is not connecting to the original site; the information is stored by us on our server If you want to search online the latest database, check this link
The source of the database is on the following link: www.ars.usda.gov