Heaven Health vs Function Health: which AI longevity coach is right for you?

Where Function Health wins

Function Health has the physical pipeline. They run two full panels a year through partner labs across the United States, covering more than one hundred biomarkers — thyroid, hormones, advanced lipids, heavy metals, inflammatory markers, vitamins, and minerals. That is a real lab pipeline with real venepuncture and real CLIA-certified results. Heaven Health does not draw blood. If you want bloodwork done for you on a schedule, with the logistics handled and the results stored in a HIPAA-covered portal, Function Health is genuinely better at that part of the job. They built the supply chain. We did not.

The second thing Function Health owns is clinical positioning. Mark Hyman MD is co-founder, the brand is wrapped around his existing audience, and the messaging is built for people who want a recognisable physician name on the door. That matters. If you read drhyman.com, follow his podcast, or simply prefer your longevity service to come with a named doctor attached, Function Health is the natural fit. Heaven Health is software-first. We do not have an in-house clinician, we do not diagnose, and we do not prescribe. That is by design — but if "named MD" is your hard requirement, Function Health beats us on that specific axis.

Finally, Function Health is the established US brand in this category. They cleared a waitlist of more than two hundred thousand people, raised serious venture funding, and built the operational machinery to deliver lab draws at scale. If you are in the US, want a known quantity, and are happy paying a premium for the certainty of a recognised brand, that has value too.

Where Heaven Health wins

Heaven Health is built differently. Luna is a conversational AI assistant — you actually talk to her, by voice or text, every day. She remembers what you told her yesterday, what your blood test said last month, and what you want to be working on this quarter. Function Health does not have a conversational layer in this sense. It is a portal where you log in, look at your numbers, and read explainers. Heaven Health is a coach you wear in your pocket.

The second structural advantage is the research engine. Heaven Health runs an autonomous pipeline that reads thousands of peer-reviewed Geroscience papers a day, surfaces the relevant studies, and turns them into plain-English recommendations with full citations. Every claim Luna makes in your daily plan is tied back to a primary source. Function Health publishes content from Mark Hyman's team — which is good content — but it is not a daily continuous review of new research. The Heaven Health research moat is something Function Health does not build because Function Health is a lab company, not a research company.

Pricing is the third honest advantage. Heaven Health is free at the core. The morning ritual, Heaven Score, biological age, daily plan, research feed, blood-test reading, and unlimited Luna chat are free. There are optional credits if you want to run very deep custom research, but the core daily experience never costs anything. Function Health is $499 a year — a real wall for most of the global population. If you are outside the United States, that wall is even taller because the service is not really available to you anyway.

Heaven Health also covers more devices and more languages. The app is native on iOS, Android, macOS, iPad and Vision OS, and the interface is localised into twenty languages. Function Health is an English-language US service. If you live in Germany, Japan, Brazil, France, India, or anywhere else where you would like to read your longevity coach in your own language, Heaven Health is the only one of the two that meets you where you are.

The case for using both

For US-based users with the budget, the two products layer surprisingly well. Function Health handles the physical bloodwork: twice a year you get a comprehensive panel that no consumer app can replicate. You then take that result — the PDF, a screenshot, a photo of the printed page — and hand it to Luna inside Heaven Health. Luna reads every marker, explains what each one means in your own language, and folds the new data into your daily plan and your Heaven Score going forward.

That stack is genuinely powerful. Function Health gives you the data; Heaven Health gives you the daily coaching that turns the data into behaviour change. You are not paying for two overlapping products — you are paying for the lab in one place and getting the coaching for free in the other. If $499 a year for biannual bloodwork is within your budget, layering Heaven Health on top costs you nothing and meaningfully improves the value you get out of Function Health between draws.

The case for switching

Switch from Function Health to Heaven Health if any of the following are true. You live outside the United States and Function Health is not realistically available to you. You do not have $499 a year to spend on biannual bloodwork. You already have a way of getting blood tests — through your GP, a private clinic, an employer programme, or a one-off panel — and what you need is the coaching layer on top, not another lab pipeline. You want a daily check-in, not a twice-a-year report. You want a coach you talk to in your own language, on every device you own.

Do not switch from Function Health if you genuinely need the physical lab draw and you do not have another way to get blood tests done. Heaven Health does not draw blood. Do not switch if a named clinician on the masthead is your non-negotiable. We are honest about being a software wellness assistant — we are not a clinic, and we are not pretending to be one. For diagnosis or treatment of any condition, see a licensed healthcare professional regardless of which app you use.