Function Health vs Superpower: My Honest Review After 1 Year

Disclosure: This post is not sponsored by Function Health or Superpower. Some links below are affiliate links, and both give you a discount.

Deal: Get an extra $20 off your first year of Superpower with code DAVID20. https://go.davidalex.com/superpower" rel="sponsored nofollow">Get Superpower

Quick answer

Superpower is my pick if you want a clear plan you can act on. Function Health is the pick if you want more lab draws for the money. Function costs $365 a year and tests you twice a year. Superpower starts at $199 a year with one comprehensive draw, and its protocol factored in my family history and the supplements I already take.

Not medical advice: This is my personal experience as a customer. Neither service replaces your primary care doctor, and you should talk to a licensed clinician before changing medications, supplements or treatment.

How I tested Function Health and Superpower

I paid for both and used them over 12 months. I started Function Health in May 2025 and did both of its yearly blood draws: the annual test and the six-month retest. I started Superpower in February 2026 and did its one comprehensive draw, plus its advanced blood panel.

For each one I booked the draw, went through the dashboard, read the clinical notes, messaged the concierge team, and followed the protocol. I compared them on four things:

1. Experience: sign-up, the blood draw, results and support

2. Depth of insights: how much data, and how much context around it

3. Actionability: what you actually do with the results

4. Cost and value

What do Function Health and Superpower have in common?

A lot, on paper. Both test over 100 biomarkers. Both give you a dashboard that shows what's in range and out of range. Both use Quest Diagnostics for the blood draw, so if there's a Quest near you, you can use either one.

Booking was easy on both, with plenty of open slots, and both sent prep reminders before my appointment. The draw itself felt the same. And both are clear that they don't replace your primary care doctor.

The differences show up in everything that happens around the blood draw.

Function Health vs Superpower: the experience

Superpower felt more human

Outside the standard reminder emails and texts, Superpower mailed a handwritten card to my house. It's a small thing, but it tells you how a company thinks about its customers.

Both services have a concierge team you can reach by email or text. The answers I got from each were very different, and that's where the gap opened up.

Function Health's follow-up fell apart

Function's reminders worked fine. The follow-up didn't.

• Clinical notes took six weeks. I was told to expect them in one to two weeks, and I never got a clear reason for the delay.

• The notes felt generic. When I wrote back to say so, I got copy-and-paste replies.

• They called me Robert. My name is David. That one moment told me how personalized the whole thing really was.

Maybe the team was swamped that week. But it set the tone for what came next.

How many biomarkers do you really get?

Function Health advertises 160+ lab tests a year for its listed price. In my account, my initial test plus my six-month test added up to 119 biomarkers. I'm not sure how the numbers line up, but the advertising and my results felt different.

The six-month test also didn't retest the markers I needed retested. I assumed it would. It didn't, and getting those would have cost extra. Keep that in mind if you go with Function.

Superpower showed 143 results in my account. That includes the advanced panel I added on, so the base membership alone will be fewer. You don't need the advanced panel to start.

Biological age: why my two numbers were six years apart

This one surprised me.

• Function Health put my biological age at 24.8, about 11 years younger than my actual age.

• Superpower put it at 30.5, with an overall Superpower score of 81 out of 100.

That's a big gap from two services looking at similar blood work. I see a lot of people post their biological age online, so it's worth knowing the number depends on how each company calculates it.

What matters more is what each one does with the number. Superpower breaks it down by organ system and shows which biomarkers drive each one. My cognitive age came out at 33 and my digestive age at 26, and I can click in to see exactly which results to improve.

Function Health explains how biological age works in general, then links to foods to eat: whole foods, good fats, fiber, probiotics. It doesn't connect the number to my results or to anything specific I could change. And it doesn't consider that I already eat that way.

Clinical notes: generic vs personal

This is where the gap becomes a canyon.

Two things about me matter for any blood work:

1. I have hereditary high LDL. My cholesterol runs high because of my DNA.

2. I have a low white blood cell count that's tied to my heritage. I rarely get sick.

Function Health's website says your results are "reviewed by clinicians who look at your added health history." Here's what I got.

What Function Health's notes said

My first notes flagged my LDL and told me to follow up on my low white blood cell count with my primary doctor. Fair enough. At the six-month mark, the note on my white blood cell count suggested nutrient-rich foods, rest and less stress. Nothing about it being hereditary, and no clear next step.

The biological age and glucose sections were the same: general explanations everyone already knows, with nothing that told me what I'm doing right or what to change.

What Superpower's protocol said

Superpower gave me a protocol with three clear steps on one screen:

1. Supplements: about seven specific ones, plus an advanced blood panel

2. Lifestyle and nutrition: specific goals, each with a priority level, like expanding fiber variety

3. Focus areas: detailed plans like "protect my heart and power my focus"

The heart section flagged my low HDL alongside my hereditary high LDL and my family history. Then it noted the supplements I was already taking and built on them instead of starting from zero.

For my white blood cell count, Superpower connected my Egyptian heritage and the fact that I rarely get sick to a documented, benign genetic pattern that's common in people of African and Middle Eastern descent. Function had flagged the same number. Superpower was the one that explained it in context.

When a lab tells you your white blood cell count is low, that's scary. When a service takes the time to understand where you come from and connect the dots with research, it's a completely different experience. Nothing else I've tried has come close to that.

Get $20 off your first year of Superpower with code DAVID20

Is more data better? Not if you can't act on it

Function Health gives you a huge amount of information. Each biomarker gets a breakdown, foods to enjoy, foods to limit and supplements to consider. There's a helpful top five for both foods and supplements.

But below the top five, the lists keep going. I had 14 biomarkers out of range, and the action plan asked me to eat dozens of things, avoid dozens more and consider a long list of supplements. If I did all of it and nothing changed, I wouldn't know why. If I only did some of it, I'd never know which part mattered.

My take: a list that long makes it hard for any single step to be accountable. Superpower gave me a short plan I could start the same day.

Function Health vs Superpower pricing

Prices checked on each company's pricing page on October 19, 2026. Check again before you buy, since both renew at the then-current price.

When I first joined Function Health, I paid $399. It's now $365 a year. Superpower starts at $199 for the base membership. I added the advanced panel, but you don't have to.

Both companies have plenty of upsells: supplements, extra tests, MRIs, gut microbiome tests and more. On pure price, Function gives you more draws for the money. On value, Superpower gave me a plan I could actually use.

Which should you pick?

Pick Function Health if you love raw data, you're comfortable doing your own research, and you want a cost-effective way to test a big set of biomarkers twice a year. The dashboard is well designed, it has a mobile app, and if you already have a doctor or health coach to interpret your labs, its data may be all you need.

Pick Superpower if you want to know exactly what to do with your results, with a protocol that considers your family history, your current supplements and your lifestyle.

My final choice

My choice is Superpower. The software, the customer experience and everything in between worked well, and the protocol is the part I'd pay for on its own. Since making the changes it suggested, I've noticed my midday energy is better. That's my experience, not a promise of yours.

If you work long days at a desk, a better setup helps too. Here's my Sihoo Doro C300 review. And if you're handing health and personal data to more companies, my Incogni review covers getting your info off data broker lists.

Start Superpower and save $20 with code DAVID20

Function Health vs Superpower FAQ

Is Function Health or Superpower cheaper?

Superpower has the lower starting price at $199 a year, or $179 for your first year with code DAVID20. Function Health is $365 a year but includes two blood draws, so it costs less per draw.

Do Function Health and Superpower use the same lab?

Yes. Both used Quest Diagnostics for my blood draws, so the draw itself felt the same on both.

Can I use my HSA or FSA for Function Health or Superpower?

Both list themselves as HSA and FSA eligible on their pricing pages. Check with your plan administrator to confirm.

Does Superpower include a retest?

Superpower's membership includes one comprehensive draw per year, and you can add follow-up tests anytime for an extra cost. Function Health includes a mid-year retest in its price.

Does Function Health or Superpower replace my doctor?

No. Both say they don't replace your primary care doctor. Use them to bring better questions to your appointments.