iSHAREit Download SHAREit is an app for sharing files any files, it may be images, videos, movies etc. SHAREit is developed by Lenovo and this app is the best there is to share data very quickly. It allows users to transfer files from one device to another. It also allows users to transfer files between Android and IOS, PC or MAC. This free app is available for almost all versions like PC, Windows, android etc. This is better than old technologies like USB, Bluetooth etc in terms of speed. It just takes seconds to transfer any files.