Well I saw both photoshop and sketchbook
photoshop touch pro:
You can change canvas size to anything u want (max 2048x204
can go to 16 layer
it has all crop and fiter things
It has a smudge tool
and alot of good tools but..
it has 1 simple brush just like the mspaint pencil
so I cant draw anything it is really hard to draw
but has alot of tools and cropping things
sketchbook pro:
canvas can only go to 256x256 minimum and 2560x2560
it haz diffrent kind of brushes (about 165 brush) and has alot of options in da brush
Has great colors lol
can go to 18 layers
but...
it has no tools
no smudge nothig...
and no crop tools
both programs has the best features
tools isnt cool without tools
U cant use tools if u dont have anything to draw with
I am confused is there any program that has both features