AAAAAAAAAAARRRRRRRRR !! How loud can you shout or RoaRRRRRRRRRRRRR!!! Show them who is the alpha lion here! Challenge your family, friends, colleagues, or even that stranger in the pub for the loudest roar. The app is designed exclusively for the Apple Watch to gauge the decibels of your lungs. Then mark your territory by sharing it on Facebook and Twitter! Be the one whose shout is heard around the world! But be careful, there might be other kings of the jungle!