It's quite important to keep an eye on your child and with Nanit the only tool available is the app, and this app is so flaky in its performance that the whole system is therefore sub standard. It always hangs when turning on or off the video, requiring a forced stop and start of the app. It frequently buffers at night, with no warning. It can't understand child movement. It isn't compatible with a portrait cot orientation. Only plus point is smart watch compatibility.