Frequently asked questions.
What HealthOS is, how it reads your voice, and how it's different from the wearable on your wrist.
What is HealthOS?
HealthOS is a voice-first, on-device iOS app that reads your nervous-system state from how you sound. A daily check-in takes just a few seconds — up to thirty — analyzing your unscripted speech to surface eight signals — energy, stress, fatigue, confidence and more — so you catch shifts before you consciously feel them.
How does voice biomarker analysis work?
HealthOS reads how you sound, not what you say. Each signal is a transparent, literature-grounded formula that blends acoustic features — pitch, loudness, pace, pauses, vocal clarity — scored against your own roughly 30-day baseline. It's a relative read of what's higher or lower than your usual, not a clinical or population score.
Is my voice data private?
Yes. All analysis runs entirely on-device. Your voice audio never leaves your phone and is never uploaded to the cloud.
How is HealthOS different from Oura, WHOOP, or Apple Watch?
Wearables track physiology — heart rate, HRV, sleep — and infer stress from it. HealthOS reads psychological and nervous-system state such as confidence, vocal strain, and expressiveness that a wrist sensor can't detect. There's no hardware to wear, and it works alongside your wearable rather than replacing it.
What signals does HealthOS track?
Eight: energy, stress, confidence, fatigue, vocal strain, expressiveness, articulation, and breathing — all read from how you sound.
Who is HealthOS for?
People whose performance and wellbeing depend on catching a bad state early — biohackers and self-trackers, performance-minded professionals, and anyone who wants the mind layer their wearable can't read.
Is HealthOS a medical device?
No. HealthOS is a general wellness tool for self-awareness. It does not diagnose, treat, or make clinical claims.
What does HealthOS cost and what platforms does it support?
HealthOS is free while in beta and launches on iPhone (iOS) first, currently via TestFlight.