There are a few paint apps I use on my Samsung Galaxy Note 2 smartphone. One of them is called Paint Joy. I love the app because of it’s simplicity. It’s simple enough to be a great app to play with on the go, and just feature rich enough to kick out some really cool artwork. One of my favorite features of the app however is the rainbow brush feature which automatically chooses a different color for you each time you lift the S-pen. It’s really fun, and helps to make abstract art quick and easy.