The Image-Toolbar contains two parts. The first part is the toolbar, where you can create and customize your own buttons. The second part is the image viewer, where you can view and manage your photos.

When you open Image-Toolbar for the first time, it will show you an introduction and you need to create your own settings. Once you are done with creating your own settings, you can start using Image-Toolbar. The next time you open the app, you can see that the settings are already applied. So, you can start using Image-Toolbar immediately and you don't need to re-create your settings.

With later updates more and more settings will be added.