18VC Podcast - Next Gen Builders
Most apps fight to keep you scrolling. Andy built Lullaby to do the opposite – get you off your phone and fall asleep. It started at 2 AM, after a consulting deadline, when her boyfriend made up a bedtime story and it worked better than any meditation app she'd tried. On this episode of 18VC, we sit down with Andy, founder of Lullaby, an AI sleep companion that talks you toward sleep and then gets out of the way, on why she's NOT building a generic AI companion, how "sleep intelligence" is her moat against ChatGPT, and why she'd rather you delete her app. Highlights & Key Insights: * The 2 AM origin story: a boyfriend's bedtime story out-performed Calm, Headspace, melatonin, and magnesium * Why her North Star is the opposite of every companion app – take you "from scrolling your phone to turning off your phone" * The Reddit post that validated the idea, and the top comment that said it all: "Protect that man at all cost" * Why she started the company on gut, not market research, and why speed of iteration is the real moat * The ICP she's chasing: "overstimulated achievers" who can sleep but can't turn their brain off * Her answer to the killer investor question: if ChatGPT and Claude Voice sound human, what's left? "Sleep intelligence." * The privacy design: short-term memory feeds a classifier, so the app never stores every sentence you say * The surprising interview finding – the content that helps you sleep is usually rooted in childhood familiarity Timestamps: (00:00) Intro (02:15) Cold open (02:37) From Chongqing to NYU to consulting (04:22) The pressure — and the sleep spiral (07:39) 2 AM: the bedtime story that worked (14:45) Why Lullaby isn't an AI companion (18:53) "Protect that man" — validating on Reddit (20:23) Starting on gut, not market research (23:11) The ICP: overstimulated achievers (24:52) What Lullaby actually is today (28:00) What "trust" in an AI really means (33:52) The problem they actually solve (37:12) What the user interviews revealed (42:20) "Is it real, or AI?" — the voice (44:02) The moat: sleep intelligence (47:54) Privacy & the memory design (52:21) The future: a sleep layer for Whoop & Oura (55:29) Perfectionism, killed (57:04) Advice for young founders Subscribe for the earliest signal on the founders worth watching. — Connect with Andy — LinkedIn: https://www.linkedin.com/in/zilin-liu-39b273222/ [https://www.linkedin.com/in/zilin-liu-39b273222/] X: https://x.com/zinzazilin [https://x.com/zinzazilin] Ins: https://www.instagram.com/zilin_zinza/ [https://www.instagram.com/zilin_zinza/] — Lullaby — App / TestFlight: testflight.apple.com/join/4dPtKheW [https://l.instagram.com/?u=https%3A%2F%2Ftestflight.apple.com%2Fjoin%2F4dPtKheW%3Futm_source%3Dig%26utm_medium%3Dsocial%26utm_content%3Dlink_in_bio&e=AUBHvwT4rEbZJqDWbD_NWQKXssdQxXhkWxw8RqnowysssNd7WllaoSHAvfx-u_Hw8PKiBoo5Dg06UnMqIXFTO56rzWHvb0otriUbNgBpA4UWWHYpioDSVisP5uBC1j7B1DlwZew1mOgu] — Connect with 18VC — 18VC Website: https://www.18-vc.com/ [https://www.18-vc.com/] 18VC Podcast on Spotify: https://open.spotify.com/show/6b3YoAMLjZLziwqHWy3EXb [https://open.spotify.com/show/6b3YoAMLjZLziwqHWy3EXb] 18VC Podcast on YouTube: https://youtube.com/@18vcpodcast?si=l69vI6hHwLgIvw4N [https://youtube.com/@18vcpodcast?si=l69vI6hHwLgIvw4N] 18VC Instagram: https://www.instagram.com/18venturecapital/ [https://www.instagram.com/18venturecapital/] 18VC LinkedIn: https://www.linkedin.com/company/eighteenvc/ [https://www.linkedin.com/company/eighteenvc/] 18VC X: https://x.com/Official18VC [https://x.com/Official18VC]
12 episoder
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