Fog Horn is an accelerometer based application with high quality audio. Just shake or tap your device to operate. Also, please visit the built in web browser which will direct you to the app store for more "Instrument!" programs. Also included in this app is an integrated internet browser which doesn't track the user's history. Due to App Store rules, any application that openly accesses the internet must be rated 17 . Please remember not to shake your device so hard that you lose your grip!