Numbers you can trust
A pattern is shown only with its sample size n and its FDR-corrected p, and it is described as an association, never as a cause.
n = 41
pFDR = 0.02
association
For hybrid athletes · Free invite-only beta
Lift and run on one plan, built from your own data.
Hermacles turns your wearable history into a weekly plan for strength and running. Every number comes from a deterministic core, every plan is reviewed before you see it, and nothing changes until you accept it.
Free during the beta · No ads · Encrypted per user
How it works
Each week starts from how the last one really went.
One loop, from your watch to your next week. The AI coach puts the numbers into words; it never calculates them.
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Your wearables
Sleep, heart rate, runs and lifts flow into a personal knowledge base. One source owns each metric, and readings from different devices are never averaged.
Encrypted per user -
A deterministic core
Specialists for readiness, patterns, running, strength and body composition compute every number in code, the same way every time.
No numbers from the AI -
A reviewed weekly plan
A reviewer checks each plan against thresholds with public sources, such as hard-day spacing and long-run growth. A plan that fails goes back to the planner.
You accept it, day by day -
Adherence
Completed sessions are matched to the plan. A missed session tells the planner something about your week; it is never treated as a failure.
Next week learns from this one
Then the loop starts again, from what actually happened.
Messages to the coach pass a safety check first. Warning signs stop the coaching and point you to a health professional.
What makes it different
Built to be trusted with your training and your data.
Plans you accept
Thresholds come from public sources and record who approved them. You see a day-by-day diff, and the active plan changes only when you say yes.
Your history, encrypted per user
Free text, raw payloads and source tokens are encrypted with your own key. Delete your account and the key is destroyed, so the data cannot be read again.
Your coach, with your consent
Invite a human coach or physiologist who works with several athletes. They see only what you grant, you can revoke it at once, and every access is logged for you to see.
Safety first
Warning signs, such as chest pain or fainting, stop the coaching and hand you off to a health professional, with a 24-hour pause on training advice. It is a safety stop, not a diagnosis.
Sources
Bring the data you already have.
Hermacles reads from the devices and apps below. When two devices disagree, it shows which one wins and why.
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Apple Health
AvailableSend it today with an automatic export app on your iPhone. The Hermacles iPhone app, coming soon, will sync on its own.
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Garmin
Coming soonActivities and training status. Sending workouts to your watch, only after you confirm, is planned.
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Oura
Coming soonSleep and readiness, preferred for last night when connected.
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WHOOP
Coming soonRecovery, sleep and strain.
Garmin, Apple Health, Oura and WHOOP are trademarks of their owners. Hermacles is not affiliated with or endorsed by them.
The app
Today, your week, your body and a coach that shows its work.
Screens from the web app, with synthetic data.
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Today
What to do today, then why.
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Plan
The week, session by session, and how it went.
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Body
Readings with how each one is calculated.
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Coach
Ask in plain words. The numbers come from the core.
Privacy and wellness
Your data stays yours.
Health data is processed only after you give a separate consent. Nothing goes to an AI provider unless you turn on a second consent, and you can revoke it at any time.
No ads, no third-party analytics and no cookies on this site. Your history is encrypted with your own key, and deleting your account destroys it.
FAQ
Questions, answered.
How much does it cost?
Hermacles is free during the beta. Nothing is charged and you never enter payment details.
How do I join?
The beta is small and invite-only. Request an invite by email and tell us how you train and which wearable you use.
Which platforms does it run on?
The web app works now at app.hermacles.com, on phones and computers. A native iPhone app is in development; a TestFlight beta comes next.
Which languages does it speak?
The app is in nine languages: English, Spanish, German, French, Brazilian Portuguese, Japanese, Simplified and Traditional Chinese, and Arabic (right to left). The AI coach writes free-form replies in English or Spanish for now; its fixed answers come in all nine.
Does the AI see my data?
Only if you turn on the separate AI consent. Without it, the coach answers from fixed templates built on the deterministic core.
How do I delete my data?
From Account, delete your account. Your data and connected-source tokens are removed, and the key that encrypts your history is destroyed.
Train with a plan that shows its work.
Join the free beta. Bring a wearable, keep your history, and accept every change yourself.