Kin is a decentralized cryptocurrency that aims to integrate easily across mobile and web apps, with an incentive model that rewards developers for increased usage. The Kin Rewards Engine (KRE) creates a user/developer first economy that incentivizes the adoption of new use cases and creation of value for a cryptocurrency, and encourages the exchange of value between users. Kin offers easy cryptocurrency integration using out-of-the-box tools and technologies with plug-and-play SDKs. The Kin Foundation oversees the distribution and algorithmic logic of the KRE, and undistributed Kin is held in an institutional-grade treasury. Kin can be purchased at cryptocurrency exchanges.