One think I have is a download of the RAL table of colours. I also have the AK app which has in-app purchases, soldatini international, military modelling. I also have figure painter in my iBooks app.
I downloaded a painting app. It was bloody useless.
Downloaded onto my phone
Placed the phone, figure and a shed load of paints & brushes
on the table, Went to bed.
When I woke up in the morning there was
not one stroke of paint on the figure.
Hopeless
Mick
Sketchbook, as well as being a great app for sketching out ideas, is great for trying out colour schemes. Load a monochrome image of your figure into the app and, erm, colour it in...simples.