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Quick answer: In the Rythm vs Superpower decision, Superpower is the better pick for most people who want a complete, doctor-style picture of their health once a year. Superpower runs one comprehensive venous draw covering 100+ biomarkers (about 150 with calculated ratios) for a $199 annual membership, then turns it into 17 plain-language scores, an action plan, and an AI concierge. Rythm is the better fit if your priority is frequent, low-friction at-home check-ins on a smaller core set of markers via subscription. Choose Superpower for depth and a yearly baseline; choose Rythm for cadence and convenience.
Disclosure: Vital Signs Today may earn a commission if you buy through links on this page, at no extra cost to you. This does not influence our evidence-based assessments. We are not a medical provider; talk to a clinician before acting on test results.
| Service | Best for | Pricing | Visit |
|---|---|---|---|
| Superpower | Whole-body optimization | ~$179/yr membership | View › |
| Function Health | Annual deep panel | Annual membership | View › |
Rythm vs Superpower at a glance
Both are direct-to-consumer blood testing services, but they are built around two different habits. (You will see the brand spelled both “Rythm” and “rhythm” online, so a rhythm vs Superpower search and a Rythm vs Superpower search land on the same comparison.) Rythm is a subscription that leans into convenience and repetition: easy at-home collection, a focused core panel, and the ability to retest often. Superpower is built around one deep, comprehensive draw per year that you treat as a full-body baseline and then track over time.
The honest way to frame this is not “which is more legit” (both use accredited labs) but “which behavior do you actually want.” If you will genuinely test every month or two, breadth per test matters less. If you will test once or twice a year and want that snapshot to be as complete as possible, breadth is the whole game. That single question decides most Rythm vs Superpower outcomes.
Biomarkers and panel depth
This is where the gap is widest. Superpower covers 100+ biomarkers, roughly 150 once you count calculated ratios, in a single comprehensive panel. That spans metabolic health, cholesterol and cardiovascular markers, hormones, thyroid, liver and kidney function, inflammation, and key nutrients. The point is to surface things you were not specifically looking for, which is exactly how an unexpected thyroid or metabolic flag gets caught early.
Rythm’s panels are more focused. Its core subscription tracks a smaller set of key biomarkers, and its larger tiers (for example a men’s plus style panel) push into the 70-biomarker range with markers like ApoB, hs-CRP, a full lipid panel, CMP, CBC, thyroid, and sex hormones. That is a genuinely useful set. The tradeoff is that Rythm panels are fixed bundles you cannot freely customize, and the entry tier is intentionally lean so it stays cheap and repeatable. For current panel contents and tier sizes, check Rythm directly, since they adjust their lineup.
Verdict on depth: Superpower wins for a single complete picture. If your goal is “show me everything once,” 100+ markers beats a focused core panel.
Collection: at-home convenience vs one full draw
Rythm’s strength is the collection experience. It is designed for low-friction at-home testing on a subscription cadence, which is what makes frequent retesting realistic. If the idea of booking a phlebotomist is the thing that has stopped you from testing before, that convenience is a real advantage and worth taking seriously.
Superpower uses one comprehensive blood draw per year. A full venous draw is what makes the wide 100+ marker panel possible, since some markers are hard to capture reliably from a tiny sample. The annual rhythm is the point: one thorough baseline, reviewed and tracked, rather than many partial snapshots.
So the Superpower vs rhythm blood test collection question comes down to cadence versus completeness. Frequent and easy, or annual and thorough.
Price: subscription cadence vs one annual fee
Superpower is $199 per year for the membership, which includes the comprehensive draw, the 100+ biomarker panel, 17 health scores, a personalized action plan, and the AI concierge. Note that members in New York and New Jersey pay $399 due to state lab rules. On a cost-per-biomarker basis, spreading $199 across 100+ markers is hard to beat for a full-body panel.
Rythm is a subscription with flexibility to skip or cancel, priced to make frequent at-home testing affordable per check-in. Because pricing and tiers change and depend on which panel you choose, we are not quoting a fixed Rythm number here; confirm the current price on Rythm’s site before you buy. The fair way to compare is total annual spend: a few Rythm check-ins across a year versus one $199 Superpower membership, weighed against how many markers each gives you.
If you want one predictable yearly cost tied to a wide panel, Superpower is the cleaner math.
What you do with the results
Numbers you do not understand do not change behavior. This is where Superpower’s packaging earns its keep: 17 plain-language health scores, a personalized action plan, and an AI concierge you can actually chat with about a flagged marker. For someone who is not a clinician, that translation layer is often the difference between testing once and forgetting versus testing and acting.
Rythm delivers results through its own dashboard built for tracking the same core markers over time, which suits the frequent-retest model well. If your main goal is watching a handful of markers trend, that focused view is a feature, not a limitation.
One safety note for both services: a result outside the normal range is a prompt to talk to a clinician, not a diagnosis. These are screening and tracking tools, not a substitute for medical care.
Full-body lab membership: 100+ biomarkers, doctor-reviewed, tracked over time.
Where Function Health fits in
If you want the most clinically thorough option
If reading this makes you want maximum depth rather than maximum convenience, Function Health is worth a look. It runs 160+ biomarkers for $365 per year, with two draws per year plus a urinalysis and a 6-month retest built in. It is more clinically thorough than either Rythm or Superpower, and priced accordingly; its AI chat layer is newer. Choose Function Health if breadth and a structured retest schedule matter more than cost or simplicity.
Our bottom line
For the typical reader comparing Rythm vs Superpower, Superpower is the recommendation: 100+ biomarkers, a $199 annual baseline, and a results experience designed for non-experts to act on. Pick Rythm if frequent, frictionless at-home testing is the habit you will actually keep, and step up to Function Health if you want the deepest panel with a built-in retest.
Related reading on Vital Signs Today
- Is Rythm Health Legit? An Honest 2026 Assessment
- Rythm Blood Test Review (2026): Is It Worth Your Money?
- Superpower Blood Test Review (2026): Is It Worth the Membership?
- How Much Does Superpower Cost? Full 2026 Pricing Breakdown
Frequently asked questions
Is Rythm or Superpower better for a once-a-year full check?
Superpower. Its single comprehensive draw covers 100+ biomarkers for $199 a year, which is built for exactly that one thorough annual baseline. Rythm is optimized for frequent, smaller check-ins rather than one deep snapshot.
How does the Superpower vs Rythm blood test collection method differ?
Rythm focuses on convenient at-home collection on a subscription cadence, which makes frequent retesting easy. Superpower uses one full venous draw per year, which is what enables its wider 100+ marker panel.
How much does the Rythm health blood test cost compared with Superpower?
Superpower is a flat $199 per year ($399 in New York and New Jersey). Rythm is a flexible subscription priced for repeat testing, and the figure varies by panel and tier, so confirm current pricing on Rythm’s site. Compare total annual spend against how many markers each gives you.
Are Rythm and Superpower legitimate?
Both are real direct-to-consumer testing services that process samples through accredited labs. Neither is a diagnostic clinic, so treat any out-of-range result as a reason to consult a clinician rather than a diagnosis.
Which should I choose if I might want even more biomarkers?
Look at Function Health, which tests 160+ biomarkers for $365 per year with two draws and a built-in 6-month retest. It is the most clinically thorough of the three, with Superpower as the best value middle ground and Rythm as the most convenient for frequent testing.
