We traveled back east for Christmas and I forgot to bring our baby monitors but I needed a baby monitor. I downloaded 'Baby monitoring by Annie' and I love it. Alerts me when the babies are awake. I installed it on my ipad to be used as the listening device and it alerts me on my iphone (the parent unit). I think I can use it to talk to the babies, too. Now that I'm home, I can use it to monitor while I'm at work. (Not that I need to check on DH.) I guess it can be used as a nanny monitor (it can take video but I use just the audio)... you can listen to them. It works using my wifi. I can set the level at which they are awake, so background noise like white noise machines shouldn't be a problem.