Yesterday evening per chance I found this new app on the App Store: Glamzy
The basic version is for free, so I gave it a try.
You can do make-up charts with it! You have all the standard MAC and Make Up Forever colors provided.
Blending is quite hard to do and you need to be patient by zooming in and out over and over again.
But it's fun to play with all the colors and make combinations, although you only can work with your finger on a 5x7.5 cm screen, so it's not very exact.
But it's nice tool to kill time if you are waiting for the bus.