XVHG isn't a chatbot in a fitness wrapper. It's a pipeline: real signals in, deterministic math where math belongs, and generative intelligence only where judgment is needed. Here's how the engine actually works.
Sleep, HRV, resting heart rate, steps, training strain, and your logged work flow in from Apple Health and the app.
Readiness, momentum, streaks, and your score are calculated deterministically — real numbers, not guesses. Cheap, instant, always consistent.
Generative AI handles only what needs judgment — the plan, the projection, the coaching language — grounded in the computed truth.
Today's plan, rewritten and ready before you open the app — with the reasoning behind it, in your identity's voice.
Your score, macros, streaks, XP, and readiness are computed with real formulas. That means they're instant, free, and identical every time — never hallucinated, never drifting. The numbers you trust are actually true.
Building a week's training, projecting your Future Self, adapting to a bad night's sleep, and speaking in your coach's voice — these need real intelligence. The AI does only this, grounded in the deterministic truth beneath it.
No AI keys live in the app. Every model call routes through a secured server layer — the client never holds a secret.
Body scans and sensitive vision run on-device using Apple's frameworks. Your images shape your plan — they don't leave your phone.
Row-level security means your data is yours alone. No selling, no ads, no exceptions — the business model is the subscription, not you.
Because the heavy lifting is deterministic, XVHG runs efficiently at scale — which means the intelligence stays affordable and the product stays alive. Premium doesn't have to mean unsustainable.
Join the waitlist for early access and a founding-member rate.