Free · AI health coach
Ask Duncan anything about your health. Free.
Food, sleep, sunlight, supplements, training. Duncan answers in the TFC voice, grounded in the evidence and honest about where it is thin. The sharp mate who has done the reading, available whenever you are.
- Three questions a day, free, every day
- No card. You sign in with just an email.
- Grounded in TFC's cited, claim-checked corpus
- Honest about limits: no diagnoses, no personal doses
Duncan is an AI wellness coach, not a doctor. 18+. See what members get
TFC Health
Meet Duncan.
The TFC health coach. Opinionated about real food, sunlight, sleep and movement. Honest about what the evidence actually says. He's an AI, he'll tell you so himself, and he is not a doctor.
Three free questions a day. No card needed to start.
By continuing you agree to the Terms and Privacy Policy. In an emergency call your local emergency number, not a chatbot.
People ask him things like
Free gets you the coach.
Membership gets you remembered.
Members lift the daily cap and give Duncan a memory: a 30-second profile plus the running thread of what you are working on, read before every answer. About the price of one coffee a month, or less on the annual plan.
See pricingThe questions people ask first
Is the coach really free?
Yes. Three questions a day, every day, with no card and no trial countdown. Members pay a small subscription for unlimited questions and memory, but the free tier is the same coach.
Is this medical advice?
No. Duncan is an AI wellness coach, not a doctor. He will not diagnose you or give personal doses, and he points anything that needs a professional at one.
What makes Duncan different from a generic chatbot?
He answers from TFC's own citation-checked corpus and claim rules rather than raw model memory, he tells you when evidence is thin, and he refuses the things an honest coach should refuse.