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HealthTech Series A Founded 2020

NextSense

NextSense develops wireless earbuds that monitor brain activity and enhance sleep quality. The earbuds use sensors to capture brain rhythms and track body movement, measuring sleep metrics and providing an intelligent relaxation experience with science-backed audio. The product automatically pauses audio when sensors detect that the user has fallen asleep. Founded in 2020 and headquartered in Mountain View, United…

📍 Mountain View, United States · Disease Self Management,

Funding snapshot

Last roundSeries A
Amount$16M
Date11 November 2025
Total raised$35M
Team size23

About

NextSense develops wireless earbuds that monitor brain activity and enhance sleep quality. The earbuds use sensors to capture brain rhythms and track body movement, measuring sleep metrics and providing an intelligent relaxation experience with science-backed audio. The product automatically pauses audio when sensors detect that the user has fallen asleep. Founded in 2020 and headquartered in Mountain View, United States, NextSense has raised approximately $35.3M in Series A funding from investors including Angelini Ventures, Ascension Ventures, Satori Capital, Corundum Neuroscience, and Particular Ventures. The company employs 23 people and combines consumer earbud form factor with electroencephalography (EEG) sensing technology, enabling continuous brain activity monitoring outside clinical settings for sleep optimization, cognitive performance tracking, and potential early detection of neurological conditions.

Business model

Wearable Technology > Health and Wellness Devices > Sleep Monitoring,

Disease Self Management > Sleep > Therapy > Device > Wearable,

Fitness & Wellness Tech > Mind & Body Wellness > Sleep Management > Devices

Institutional investors

Angelini Ventures Ascension Ventures Satori Capital Corundum Neuroscience Particular Ventures David Eagleman Esther Dyson Bradley Horowitz

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