I am Karimullah Sefat student at Nagoya University, Japan. before coming to Japan, I was working as Manager of Water Rights and Resources in Helmand River Basin, Afghanistan. I have been using ArcGIS for my studies for 1.5 years. and recently I have started using Appstudio for ArcGIS and WebApp Builders (WAB) for publishing flood hazard maps of Helmand River as a web map and native app. AppStudio is quite an interesting and helpful tool for creating an app without writing codes.