Scrabble app droid/iphone/itouch/ sprint phone?

Theres a scrabble application that my aunt and step dad have where they can play each other and my other aunt who has a sprint phone has it too so all 3 can play together. I know there's different names and types for games like that, but i know its not a variation of it, and its definitely "Scrabble" but since i have an itouch, which pretty much is an iphone w no calls, can i get that same app and play with them? what is it called, and how much is it?