I can't say I have any need for facial expression on my Android...However, Wishbone is quite possibly the most underrated suspension design program I've used, especially for typical Locost front suspension design. It's the only basic suspension design program I'm aware of that runs the calculations in 3D, thus also being the only one that will tell you about the geometric effects of things like steering angle, bump steer, and anti's. Updating it to VB extended its useful life once, coming up on a decade ago now, and converting it into app form would be a fantastic way to do so again!
http://locostusa.com/forums/viewtopic.php?f=26&t=11985