I have been working on VortexOS and finally made a calculator app. To use the calculator app you just have to click on the app icon to open it. It has a closing button and a minimize button. The calculator app is also draggable wherever you want it to be. And you can use the numbers on your computers keyboard to type on the calculator and whenever your cursor hovers over the app icon of calculator app, the app icon elevates up and also having the box-shadow effect gives the app a high-tech glow and feel. I have to add more apps like a clock app with a stopwatch and timer feature. Background color or image choosing option which makes it similar to you choosing a wallpaper for your laptop screen.