Could be easier to access for those times you just want to send a message with an emoticon. Sometimes wouldn't even access. Uninstalled soon after I installed.

Simple to use and fun. Could use more options but you could just open the action shots in a different program and get creative I guess.

Like someone else said a motion detection is a good option too so it's active when the car is in motion. But if I click this app and toss the phone back in my bag it'll send the texter a message that i'm driving and will get back to them when I can. Helpful little app.