The most important changes in your health are invisible — until they aren't. HALO sees what you can't and moves first, steering your bloodwork, training, nutrition, sleep, and molecules as one. Every pillar sharpens the next, learning you more deeply with each reading. Not another tracker. A guardian.
Every app tracks one metric in a vacuum. Your ring doesn't know your bloodwork. Your sleep score never sees your labs. The signal that matters lives in the gaps between them — and until now, you were the only one looking. HALO sees all of it — so it reads the real story, and moves every pillar accordingly.
PDF in your inbox, forgotten
Static template, ignores recovery
Pills logged, effects unknown
Calorie count, zero context
A score with no consequence
Training, Nutrition, Sleep, and Molecules feed and read from each other daily — all graded against the empirical ground truth of your bloodwork.
One source of truth: your blood. Every move HALO makes is graded against it — finding the patterns that go missed, seeing risk early, and building a program to protect you.
It’s your largest metabolic and endocrine organ — it clears glucose, keeps you insulin-sensitive, and releases the myokines that protect your brain, heart, and immune system. It’s also what keeps you mobile, upright, and resistant to falls for life. So HALO trains it like the organ your future depends on — deliberately, and for life.
HALO holds you at the bodyweight and body-fat where your bloodwork looks its best. Your macros are timed and selected to support muscle mass, sleep, and healthspan — and they never sit still, moving with your weight trends, activity, and recovery.
Three meals matched to exactly what’s missing — ordered in a tap, so you close your macros every single day.
Every molecule earns its place — tagged with why it's in your stack and measured against real outcomes.
Sleep isn't a score in isolation — HALO maps it to the exact body systems and biomarkers it influences. It learns your sleep patterns night over night and, when recovery calls for it, reaches into the other pillars — easing your training load and reshaping your macros around the insulin sensitivity a short night leaves behind. It works in reverse too, steering your food choices and supplements toward the nutrients that help you fall and stay asleep.
HALO is your longevity brain — it reads every signal your body sends and rebalances all five pillars to optimize the day in front of you. You don't read the charts or weigh the trade-offs. HALO does the compute; you just follow the plan.
Swap back squat → hack squat · quad volume −2 sets
HRV ▼21, RHR ▲7 — lower systemic fatigue; bar speed stalling+200 kcal today · base target held
Offsets yesterday's +4,700 steps; loss still on plan at −0.9 lb/wkIron deficiency flagged
Ferritin 34 ng/mL — below optimal, re-test in 8 weeksAdd iron bisglycinate 25 mg
With vitamin C at lunch; away from coffee & calciumPush wind-down reminder at 10:00 PM
Bedtime drifted to ~1:10 AM three nights runningA guided setup captures your health history, goals, wearables, and preferences.
Sync your wearable and optionally upload bloodwork for an instant HALO Score.
HALO builds a stack, nutrition plan, and training cycle around your phenotype.
Check in daily, follow the levers, and watch your biomarkers prove it's working.
Reads heart rate, HRV, sleep, steps, active energy — and writes completed workouts back.
Deep sleep and recovery data flows straight into your causality engine.
Strain and recovery state calibrate your training zones automatically.
Bloodwork is the proof. Every pillar graded against real biomarker movement — no guesswork.
HALO adapts to your individual response patterns, not population averages.
Training, Nutrition, Sleep, and Molecules feed and read from each other daily.
Every pillar has a today-state. Actionable, not just informational.
Your stack is a personal experiment with measured biomarker deltas and real efficacy.
Get your HALO Score and see every pillar working together.
Start free trial →Every pillar, fully personalized. Cancel anytime through the App Store.
"First app that told me my supplement was doing nothing — and proved it in bloodwork. Dropped it, saved money."
"When I'd plateau, I never knew whether to add volume or back off. HALO just tells me which way to go — and it's been right every time."
"I stopped guessing. One screen every morning tells me exactly what my body needs. That's the whole game."
No — it's optional at onboarding. But uploading a panel unlocks your HALO Score and the full cross-pillar synthesis, which is the heart of the experience.
Apple Watch (via HealthKit), Oura Ring, and Whoop. HALO reads heart rate, HRV, sleep, steps, and active energy to calibrate your zones and recovery.
Yes — encrypted storage, no third-party tracking, and no data selling. Your health data is used only to power app functionality.
iOS, built with React Native + Expo and deep Apple HealthKit integration for a native, premium experience.
Yes — your subscription is managed through the App Store and can be cancelled at any time.
Bloodwork, training, nutrition, sleep, and supplements — finally working together. Personalized to your phenotype. Proven by your bloodwork.
Start your free trial →Questions, feedback, or an issue with the app? Send us a message and we'll get back to you.
We read every message. For the fastest help with a bug, include your device model, iOS version, and what you were doing when the issue happened.