App Name: 7 Little Words [Android, iOS App]
Cost: Free
Developer: Blue Ox Technologies
App Market: Download Page
Description:
7 Little words is an extremely popular word puzzle game that you can play on your mobile devices or online. The rules are simple: Each bite-size puzzle consists of 7 clues, 7 mystery words, and 20 letter groups. Find the mystery words by deciphering the clues and combining the letter groups.
This is a neat little app that help exercise your brain.
Check out this site where they discuss and post possible solutions.