Draw images, write down your notes and save them.
Button explanation:
1st button: Switches the menu states.
Button 2-6: Provide saved colors. You can switch them by dragging.
7th button: Image scale and translation operations.
8th button: Color management. Try out the bottom left button which lets you select colors from the image. The bottom right button opens a color palette.
9th and last button: Undo button.
Images will be saved in the pictures folder. They are available in the gallery.