You might've come across my post about Sociotypograph — a website that helps you determine your (or anyone else’s) sociotype by selecting 3-4 Reinin traits: http://www.the16types.info/vbulletin...-Reinin-traits
Now it's available as iPhone/iPod touch app: http://itunes.apple.com/us/app/isoci...5363?ls=1&mt=8
It's called iSociotype and it's free. Have some fun typing yourself and everyone you know!
If you like the app, don't forget to share it via your Facebook, Twitter, etc.