Best of all is that this monitor device has unlimited range, so you can take it into the yard, the attic, the basement, or wherever you need to without losing coverage. And it doesn't receive interference like standard monitors (there's nothing like hearing the kid down the street crying on your monitor). Moreover, the company has produced a particular algorithm that allows the app to tell the difference between crying and background noise, so you won't be alerted every time the dog barks.
If you don't have two iOS devices, you can also order a monitor to pair with the device you do have.
After the first two weeks, you can still use the service for 30 minutes a day for free, but if you want unlimited listening, you'll have to sign up for a monthly fee of a few dollars. Evoz also offers a "parenting dashboard," which analyzes your baby's sleep patterns and compares them to studies done on infant sleep. It will then offer you feedback on how to improve or modify your child's sleep patterns.
It's a pretty high tech solution to the age-old baby monitoring dilemma. What do you think? Would you use the sleep data? Are you willing to pay a small monthly fee for a high tech monitoring solution? We'd love to hear your thoughts in the comments!