Mobius is a company that aims to make crypto-commerce a reality by providing fast and free mobile payment integration into apps and businesses. They offer a mobile wallet app for storing, sending, exchanging, and receiving cryptocurrencies on the Stellar network. Mobius allows users to pay and accept cryptocurrency using simple QR codes. They also provide an open-source, decentralized app store interface for discovering and paying for DApps with crypto. Mobius is built on top of the Stellar network.