Happiest Baby SNOO Smart Sleeper review

The Happiest Baby SNOO Smart Sleeper does more than any other bassinet here. Created by pediatrician Dr. Harvey Karp, it rocks the baby and plays white noise all night, and when its built-in sensors detect crying it steps up through 4 levels of motion and sound. The SNOO Sack swaddle clips to the bassinet, and Happiest Baby says SNOO is the first infant sleep system to receive FDA De Novo authorization for keeping sleeping babies on their backs. A Weaning Mode helps with the crib transition. The box includes 3 SNOO Sacks in sizes S, M and L, a sheet, a mattress with a water-resistant cover and a 9-month Premium subscription to the Happiest Baby app. Price is the obstacle: new it listed at $1,995 and sold for $1,496.25 on sale when we checked, pre-loved units started at $1,395, and rentals start at $159 a month. Happiest Baby aims it at the first 6 months, so renting often makes more sense than buying.

Who it is for

parents who want automated soothing and can buy or rent

Price

$1,496.25 new on sale (listed at $1,995); pre-loved from $1,395; rentals from $159 a month; 30-day trial.

NEW $1,995$1,496.25
Quoted from the vendor pricing page on November 13, 2026.

Key features

• Responds to fussing with 4 levels of gradually increasing motion and sound
• FDA De Novo authorization for keeping sleeping babies on their backs
• SNOO Sack swaddle clips to the bassinet
• Weaning Mode for the move to a crib
• 3 SNOO Sacks, a sheet, a mattress and a 9-month app Premium subscription included

Strengths and weaknesses

• Strength: Rental from $159 a month lets you pay only for the months you use
• Strength: Ships free with a 30-day trial that starts on delivery
• Strength: Happiest Baby says it is used in 200+ hospitals
• Weakness: The new price of $1,496.25 was a 25% sale off $1,995
• Weakness: Happiest Baby positions it for the first 6 months
• Weakness: Warranty is 1 year, limited

Key facts

• Price: $1,496.25 new (sale), $1,395 pre-loved
• Rental: From $159 per month
• Trial: 30 days from delivery
• Soothing: 4 levels of motion and sound
• Warranty: 1-year limited

Where it ranks

Happiest Baby SNOO Smart Sleeper is No. 7 in our Best Bassinets verdict.