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celebrate Halloween with peace of mind this year by downloading two free apps mama bear is a great app for both iPhone and Android users and is perfect for keeping track of kids on a dark Halloween night to get started have the entire family download the app onto their smartphones track your kids whereabouts on a map and get alerted when they cross preset boundaries like a neighborhood or school property the app also allows you to check in on your kids Facebook accounts get alerts if they're in a speeding car or tagged in a photo on Instagram next have confidence that your kids are trick-or-treating in a safe neighborhood with sex offender search another free app for both kinds of phones using your location the Apple pinpoint all of the registered sex offenders in an area as well as point out local fire and police stations and hospitals register with the app and we'll notify you if any new offenders move into the neighborhood have a happy and safe Halloween in San Francisco I'm Kara Tsuboi cnet.com for CBS News