SilenceZone is the app that will remember you to put the phone without sound when it should be without sound. All you have to fine is to define "Silence Zones" and everything else is taken care for you. We are giving free promo codes to the first people to follow us on twitter (http://twitter.com/silencezoneapp) For more information regarding the app, go to: http://itunes.com/apps/silencezone or www.silencezone.com