But these nursery essentials can be as fussy as the babies they keep tabs on. And like virtually every other household appliance, they are growing increasingly more capable and complex. In addition to conventional video baby monitors that use a camera and a handheld LCD display, often called a “parent unit,” there are now also Wi-Fi-enabled systems that connect to your home network and use your smartphone as both the display and the controller, much like DIY home security cameras. These latter models offer high-defition video, intelligent alerts, and the ability to check on your child from anywhere you have an internet connection.
If you're looking for a smartphone-compatible baby monitor that's designed first and foremost to fill that role, Wirecutter calls the iBaby M6S (Est. $135) "the least bad Wi-Fi monitor (so far)," simply because it's "slightly easier to set up than its competitors." Once again, however, experts disagree: Baby Bargains says Nest Cam "runs circles around iBaby when it comes to set up and ease of use."
It really depends on what you feel most comfortable with. There are audio monitors that allow you to listen to any noise coming from the nursery, vital monitors that track sleep and breathing and video monitors that add sight to sound. Babylist parents overwhelmingly choose video monitors. The security of seeing what your child is up to—like if they’ve gotten tangled in their swaddle, pulled their diaper off or climbed out of the crib—can be worth the extra cost of a video monitor.