It is called Super Monster Puncher IRL.
From the game's description:
There are a lot of monsters out there, so you better punch them all. Turn your GPS on, explore your local stores, and see what kind of monsters show up for the punching.
The game has some really neat artwork and it is fun when you change locations and find new monsters. Besides, it's reminiscent of one of my favorite childhood games. Show them some love and let us know what you think.
Google Play Link: http://bit.ly/Jlye7M.