Track Sex Offenders with your iPhone

Parents worried about sex offenders in their neighborhood can now download an application on their iPhone that tells them if any sex offenders are in a 10-mile radius. Nervous moms use the application to track sex offenders who encroach upon their every move, whether it's soccer practice or the grocery store or the gym.

"I am constantly worrying about the well-being of my family," Tracy Rodriguez, a Houston-based mom who uses the app several times daily, told CNN. "You can't be too careful."

The Offender Locator app is one of the 10 most popular iPhone apps, and it's been downloaded more than 1 million times.