ARROUND is a breakthrough communication platform that gives its users a beautiful personalized digital world, advertisers – a new efficient promotion channel and AR-developers – a vast sales market for their software and hardware. According to the Juniper Research and Goldman Sachs analysts, the augmented reality market will grow by 20-100 times in the next 5 years up to 115 bn USD in 2020. The AR technologies are expected to become the communications medium for the next generation after the smartphone and thus to become the basis of the future mobile advertising market. The ARROUND app is a free cross-platform multi-user software that will allow smartphone users to see augmented reality objects and interact with them, as well as communicate with each other. For the users, the ARROUND is a unique platform for communications and entertainment in augmented reality. Platform infrastructure that utilizes the blockchain technology is designed for the development and sales of goods, services, information and advertising using the decentralized economy principles. For the developers and advertisers, the ARROUND platform is an innovative partnership network in the field of AR and a new mobile advertising channel with unique characteristics. For advertisers, initially we will develop three generic AR-solutions: for retail stores, shopping malls and mass events. We will actively involve advertising and creative agencies in providing similar services within our platform. https://www.youtube.com/watch?v=W8pFXNBTYhU