We are sure you've noticed, either in an app store or on your device, that all the apps have icons. This small image enables users to easily recognize one app from another. Before sharing your app, you will want to upload an icon. This could be some artwork that you used in your app or a logo if you have created one. You can easily upload this image in the Properties panel for Screen1 under the option Icon. You will find it midway down the panel of options.
Whether you've made an app with the help of a tutorial or from scratch, you have the privilege of sharing your app with others. There are many ways to do this. The easiest way is from within App Inventor itself with the Gallery.