Sally uses the Currency app to barter her web design skills for other goods and services she needs. The app aims to address problems with current bartering by making it easier to find partners, providing ratings and reviews, and offering accountability. There is a large market opportunity as over 20 million small businesses in the US struggle with limited cash flow but want to barter more. The Currency app proposes to connect these businesses through a mobile marketplace where they can browse offers, negotiate trades, and track credit balances.