The People Building This
Engineers, athletes, and builders who believe the next great personal AI starts with the body — not the calendar.
Principles, Not Platitudes
Your Data, Your Control
Health data is the most intimate data you have. We encrypt it on your phone and never log it on our servers. That's not a feature — it's a promise.
Science, Not Hype
Our readiness score is grounded in SAFTE-FAST, the same fatigue model the US Army trusts. When we don't have enough data, we say so.
Honest AI
The agent shows its confidence level. It explains its reasoning. It never pretends to be a doctor. And it never diagnoses medical conditions.
Built to Empower
OneSync doesn't replace your judgment — it gives you information your conscious mind doesn't have access to, so you can make better decisions.
Build With Us
If you believe the next great personal AI starts with the body — we'd love to hear from you.



