Didnt work well with iPhone 4s or iPad 2 as nanny receiver. It would keep disconnecting and I would need to restart and pair both which is very annoying. I finally instead used both my kids 3GS phones and it DID work flawlessly. Old iphones and ipods and this will work. I think with an update for the newer iPhones and iPads this would be perfect. Bring two charges as well.
DeusNYC about Baby Monitor - WiFi & Bluetooth w/Background Audio, v1.4