Starting with the design of Coway IoCare app service renewal in 2017, The Grap has been in charge of the design operation of the app until 2020. we built a UI to manage Coway's various devices as well as controls in one app, and we optimized the app so that it can respond flexibly to multiple languages according to the service globally. Also, we are building and operating Coway's B2B IoT services too.