i need an app that i can tune into the frequency of my baby monitor and just listen with my phone (through bluetooth wireless). i know i can tune into police scanners with my phone, so would it be possible to tune into the frequency of a baby monitor? i've seen the one where you actually leave the phone in the crib, but that won't work for me. scenario: the baby is taking a nap and i am in the front yard with her big sister while she rides a bike in the driveway. i just want to be able to sit on the front porch so i can watch one while listening for the other. leaving the phone in the crib is not an option as i won't have a another phone to receive a text or call if the little one hollers.