Foster is a lifestyle application designed for iPhone users, developed by Jeremy Yarley. It falls under the shopping subcategory, offering a convenient way to organize wish lists for various occasions like birthdays, holidays, or social gatherings. Users can effortlessly create detailed wish lists, add items, and share them with friends and family. The app allows marking items as purchased to avoid duplicate purchases and includes features such as item customization, favoriting important items, and adding website links for easy purchasing guidance.

With Foster, users can add multiple items to their wish lists, specify details like size and color, mark favorites, and provide links to purchase locations. It's a practical tool for streamlining gift-giving processes without enabling direct purchases within the app.