ColorSplash for iPhone is awesome. It is simple to use after you watch the introductory videos that come with it.
ColorSplash for iPhone will work on an iPad too, but I highly recommend buying ColorSplash for iPad to use on an iPad. Its dedicated interface is easier to use.
If you have an iPad with no camera I recommend using the PhotoSync app to transfer photos among your iPhone, iPad and Windows or Mac computer.
Get the iPhone AND iPad ColorSplash apps. Youll love them!
Ron Charlton about Color Splash, v3.6.1