The Hatt Project is developing a mobile app to help homeless shelters receive hat donations from users. The app will allow users to easily donate hats, play hat-related games, and provide donations to shelters in need. It targets Seattle area residents who want to donate hats and help those without adequate warmth. The app aims to address the problem that many lack a convenient way to donate and that warmth is needed. It will feature donation pages linking to nearby shelters, instructions for making hats to donate, and may expand locations and games over time based on feedback.