Habits is a Getting Things Done (GTD) companion iPhone application that helps you form good habits. Enter in the habits you want to form and how often you want to do them. Then, run Habits each day to see when it’s time to do one of them.
3D-o-Mat is a simple iPhone and iPad app to take 3D photos that you can view with Red/Cyan 3D glasses (buy them on Amazon).
PaleoViz helps you keep to a Paleo diet by giving you an easy way to track your meals. Just take a picture and rate the meal. Later you can see your progress and share great paleo meals with friends. I removed PaleoViz from the App Store in 2016.