NoiseOut. The world's only active noise cancelling app for your phone or tablet. Making the Loud World Around You… Quiet. With a simple touch of a button, imagine all the noise around you melting away. Hear that? I didn’t think so. NoiseOut works with your standard headphones that have a built in microphone – no batteries to buy and change! Using the same technology as those overpriced headphones, NoiseOut processes the ambient noise and cancels it out. Leave it running in the background and hear every note of Beethoven’s Third Symphony, not the drone of the 747 engines; every lyric of Kanye’s newest hit, not the guy humming beside you in the library. For travel, your commute, or the blaring horns of the city you can listen to your music, watch a movie, or just relax in peace with NoiseOut.