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Lully

Inactive · Lully is developing an under-the-mattress technology that precisely…

2signal of 100 · rising 0
  • team of 5Team size · YC's directory+4
  • went through YCProgram · this site+4

A sum of public facts, not a judgement and not investment advice.

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About Lully

At Lully, we’re building the children’s sleep company. We create innovative, thoughtfully-designed, clinically-proven consumer products to help children, and their families, sleep better. Our first product, The Sleep Guardian is the only solution for night terrors. Based on our patented, clinically-proven technology, the Sleep Guardian goes under the mattress and uses precisely-timed vibrations to avoid night terror episodes completely. The Sleep Guardian is just the initial product in a suite of smart solutions based on our process: combining a user-centric approach with a clinical understanding of sleep to solve unmet problems in children’s sleep. Based in San Francisco, Lully was founded by Dr. Andy Rink, a doctor and father, and Varun Boriah, a medical device entrepreneur. Lully was spun out of the Stanford Biodesign Fellowship and is backed by Y Combinator, Two Sigma Ventures, Stanford-StartX Fund and Highway1. We’ve partnered with Stanford Sleep and Riley Children’s Hospital in our goal to help families sleep better.

YC batch
W15 · Winter 2015
Status, per YC
Inactive
Category
Other
Team size
5
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: Sleep Tech, Health Tech

Changes seen

WebsiteNov 2, 2026

Moved its website from lullysleep.com to none.

Website linkNov 2, 2026

Website link changed from https://www.lullysleep.com/ to none.

Lully in W15: 110 companies, 24% AI

Lully: questions

Which YC batch was Lully in?

Lully was in Y Combinator's Winter 2015 batch (W15).

Is Lully still active?

Y Combinator lists Lully as inactive.

Where is Lully based?

Lully lists San Francisco, CA, USA as its location on YC's directory.