Check out these cool videos that show you how to build Twitter Search and Weather Search with Tiggr Mobile Apps Builder. If you want to try it, sign up for Tiggr Mobile Apps Builder beta program at http://gotiggr.com. Then try the two Getting Started Guides available: Twitter Search and Weather Search.
Building Twitter Search App:
Building Weather Search App, Part 1/2:
Building Wether App Search, Part 2/2: