Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Pattern Monster - Pattern Monster is a pattern maker app to create vector patterns for your projects
Touch GIS - The premier tool for mobile field data collection and visualization. Available for iPhone & iPad.
Patterninja - Create patterns online
Cone - A delightful and easy to use color picker for the real world
Patternizer - Create awesome background patterns in just a few minutes