Does your child wake up crying and upset? You’ve been trying to calm your child down, and not succeeding. You feel helpless. You’re worried, tired, and emotional. It may be night terrors and you’re not alone. Parents, just like you, experience the same scenario nightly. In fact, night terrors affect 1 in 5 families across the US.

Some of these families are fighting back. They’ve discovered Lully, the Sleep Guardian. Lully, a small vibrating pod, is placed beneath your child's mattress, and it vibrates to gently move your child to a safer stage of sleep. Lully’s easy-to-use app guides you through the set up and use, as well as tracks and updates you on the improvements to your child’s sleep. Lully is clinically proven to reduce night terrors by 90%, helping children and parents get the sleep they deserve.

Become a Lully Parent: Better Sleep for the Whole Family. Order your Lully at

Featured in: NPR, TechCrunch, Lucie’s List, Brit & Co, San Jose Mercury, Inc.

This app requires a Lully Sleep Guardian device and is optimized for iPhone 5 and newer.



“After having night terrors nightly for years, I was amazed that it worked from the first night!” - EMILY, MINNESOTA
“Lully went under Hugo’s mattress and was simple to use. Hugo started to sleep right through the night for the first time in months! It was fantastic.” – ALEXANDRA, SYDNEY
“I hadn’t even realized how stressed I had been but now I could go to sleep at night knowing we had finally found the right solution for Ellie’s night terrors. Most importantly, Ellie was sleeping better than ever.” – EDY, ATLANTA



Lully, a venture backed company, is developing smart technology to improve sleep for all ages. Lully was born out of research conducted at Stanford University and is located in San Francisco, CA. Get your Lully at

What's New

Version 3.16

Fix for revealing Navigation and Tab Bar when Progress cards are shorter than screen

Ratings and Reviews

1ofakindwork ,

Great device in need of more app functions.

I wish this device would sense my child's movement and be more automatic. I feel I need to do some of the in needed foot work. But at the end of the day it does help my son avoid his night terrors! So thanks for that!

Ed's Dad ,

New update

Just got an email about a new update for the Lully ap.
Seemed like a great idea and was super eager to download (and did just that).
The calendar year is set to 1999 & 2000 - w/none of the previously recorded data... Is there a patch to repair this? Hopefully so because this does seem like a great feature if done right!!!


8264647282 ,

Update fail

Update renders Lully useless by crashing the app on all devices. There should be a remote backup for such occasions.


Caydian Inc
29.9 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2015 Caydian Inc., d/b/a Lully


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