Truly adds hours of nighttime sleep for baby and parents; great app; wonderful aesthetics; available as a rental


Purchase price is extraordinarily high; did not calm a screaming baby in our testing

Star Rating



Sometimes, we decide a new tech product is so important, so revolutionary, that we just have to go out and buy it. Such is the case with the Snoo Sleeper from Happiest Baby, which we reported on from the showfloor at CES 2017, when it was introduced to the world by its inventor, Dr. Harvey Karp. While the product certainly looked good, we didn't have any way to test it at that time, as our daughter was already a year and a half old.

Life, of course, is full of blessings, and in 2019, our second child was born. Given how hard a time we'd had sleep training our first baby, we of course looked into Snoo well ahead of the birth. After reflecting on all the difficult nights we'd had during that challenging first year, we decided to give the Snoo a try, hoping for a much better nighttime experience. For the record, we purchased ours used from a friend, but would have rented it otherwise, avoiding the very high entry price (currently $1295, up from the original $1100).

So, with that stage set, let's jump into our review of the Snoo Sleeper.

The Review

On November 15, 2019, TBG appeared on Portland KGW-8's Sunrise news program to show off what the Snoo can do. Thanks to the KGW team for putting together such an amazing video. Check it out here:

Want proof that the Snoo delivered results? Check out these screenshots from the Snoo app, taken at 4 weeks, 2.5 months, and 4 months:


So, let's break this down for anyone not familiar with infant sleep patterns. At 4 weeks old, our infant slept a total of 9 hours a night, with just one 20-minute break to nurse. This compares to 2 or 3 nursing breaks for average infants. By 2.5 months, she was regularly sleeping 9 hours straight without interruption. And by 4 months, she was sleeping 10 hours straight, which is about the maximum that any child can be expected to sleep on average, regardless of age. Note that in our experience, putting her into the Snoo crying was not effective, and we also found that daytime naps required a bit more "hand holding", which you can see in the 4-week record. Overall, though, being able to get to 9-10 hours of sleep within just a few months without going through rigorous, stressful sleep training was a true miracle. Hallelujah! When we tried putting her in a crib at night, she would sleep on average 2 hours less before waking up. That's 2 hours of your time, parents!


While it may be hard to imagine that technology could solve an age-old problem like getting a newborn to sleep better, Dr. Harvey Karp and his team have done it. After just one month, our infant could sleep 9 hours a night with one break for feeding, and by 4 months, she was regularly going 10 hours straight. It's a shame the Snoo can only fit infants up to about six months old, but there's no doubt that by using it from day one, the Snoo helps babies learn to sleep better, and that they'll continue to be great sleepers even after they've outgrown the Snoo.

The Happiest Baby Snoo Smart Sleeper is available for $1,295 direct from Happiest Baby, which also offers a much more affordable $110/month rental program!