To kick start the app listing of unusual but noteworthy apps here’s Google gesture search app. This nifty app searches your phone with simple alphabet gestures.

Google Gesture
Developer: Google Inc.
Category: Tools
Google play Rating: 4.2
Install from Google Play

Google Gesture Search

Gesture Search lets you quickly access contacts, applications, settings, music and bookmarks on your Android device by drawing letters or numbers. It continuously refines search results as you add each gesture, and becomes better as it learns from your search history.