The Baby Monitor AV app lets you use both iOS and Android systems to help monitor your baby. The app lets users designate one device - iOS or Android - as the camera and microphone for the baby's room, and the other device becomes the parents station for you to see and hear what's going on in the nursery. You can also designate your computer as one of the stations if you download the free software.

The fact that you don't need two devices on the same platform is a huge perk for this app, especially if your other half or babysitter doesn't have the same type of smartphone. However, the Baby Monitor AV doesn't allow you to monitor the baby when you leave the house, since the devices sync through a shared Wi-Fi network. This also means you should password-protect your network to prevent anyone from accessing the monitor's audio and video stream.

Baby Monitor AV is free in both app stores, but if you want to actually use it, you have to purchase the upgrade for $2.49 at the Google Play Store or $2.99 at the iTunes App Store.