Sale has ended but you can still get this app.
Download WUPHF Now
WUPHF

Official Description

So you are sitting around The Office and your co-worker starts crunching on some beets. You can’t carry on a conversation with the receptionist. You have two options…
1) Put your co-workers beets in jello.
2) Use WUPHF

WUPHF lets you send messages to anybody anywhere that is also using WUPHF!