I’ve been doing more digital painting with some apps for my iPod Touch. I’ve mainly been using the Artrage app (I also so own the program on my laptop). I do believe that such apps for mobile devices are a very legitimate medium for this day and age. One thing that needs to be remembered is that when doing art on a digital platform is to sign and/or watermark your art. (Which i can forget from time to time). So on you mobile device, it is good to have a photo editing app so you can and your own stamp and watermark.
Here are some recent paintings done on my iPod touch: