Chorus Sleep (YC W21) — Mobile app and coaching program that helps employees sleep better
Chorus is a mobile app and coaching program that helps employees sleep better. We do this by combining sleep coaching, short lessons, and relaxing audio sessions that help employees, and their families, fall asleep faster and get better quality sleep through the night.
Chorus Sleep is a Y Combinator company in the Winter 2021 batch. Its directory entry describes it as: Mobile app and coaching program that helps employees sleep better. The founders listed are Ali Abramovitz Cook (Founder), MK Hurlbutt (Founder), Warren Runk (Founder) (Y Combinator directory entry, February 15, 2021).
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
Chorus is a mobile app and coaching program that helps employees sleep better. We do this by combining sleep coaching, short lessons, and relaxing audio sessions that help employees, and their families, fall asleep faster and get better quality sleep through the night.
Ali Abramovitz Cook
Founder
MK Hurlbutt
Founder
Warren Runk
Founder
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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What the Full Report on Chorus Sleep covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
1 cited source found
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Chorus Sleep (YC W21) — Mobile app and coaching program that helps employees sleep better. MentionFox, 2026-10-29. https://mentionfox.com/funding/yc-chorus-sleep
