The shopping assistant plugs into browsers like Chrome and Safari to compare prices and surface deals across tens of thousands of retail and resale sites in real time. It essentially serves as your own personal deal finder: Say you’re looking at a $200 dress from Anthropologie, Phia can find and compare prices at secondhand sellers to help customers find a better price.

Gates and Kianni first brainstormed startup ideas in their Stanford dorm room, cycling through concepts before landing on a consumer tool that included Gates’ interest in women’s empowerment (likely modeled after her own mother) and Kianni’s sustainability focus.

I don’t think a coupon tool that wastes excessive resources is either empowering or sustainable.