San Francisco-based Sock has secured $2.8 million in seed funding to expand its self-custodial crypto investment app. The funding round was led by Haven Ventures, with participation from Designer Fund, Expansion, Spacecadet Ventures, Sunflower Fund, and Olive Capital, as well as angel investors. Sock's mobile app aims to help casual crypto investors build wealth safely by providing automatic protection for investments and insights to invest wisely. The app does not support high-risk trading and tokens that fail to meet its criteria, instead empowering users to "do the research" using Sock Score to understand a token's fundamentals.