The UYEN application is an application for citizens who want to use the Smart City system within their desired city. It was developed by Planet Cloud Company Limited and has received the right to display data from IoT and Non-IoT devices from both government and private agencies that use the company's Smart City system only, including basic information that can be published such as information about the city. Contact information Information on tourist attractions, etc. This information is all information published on websites or reference sources of cities that use the Company's Smart City system.