Footprint is an app for researching electronic components, learning about electronics, and planning projects. It lets users search for parts, compare prices and availability from suppliers, and prepare a bill of materials with pricing information. The app also provides an illustrated electronics encyclopedia and guided builds. A typical workflow is to research components, learn about relevant concepts through the guides, and use a parts list to plan a project. Supplier availability and data status are shown in the app. Interactive experiments and live supplier tools require JavaScript, while public guides and site navigation are available on the website.