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Function Health vs Klarity Health: Which Is Better?

Head-to-head comparison of Function Health and Klarity Health based on our independent scoring across trust, value, experience, product range, and reputation — plus real pricing for the treatments they both offer.

Our Verdict

Function Health scores higher overall in our independent evaluation (76.3/100 vs 57.2/100), leading on trust & safety, value, experience, reputation. Klarity Health comes out ahead on product range.

76

Direct-to-consumer lab testing membership offering 160+ biomarkers twice yearly through Quest Diagnostics, with clinician-reviewed results and action plans.

Visit Function Health
57

Klarity Health is a telehealth marketplace connecting patients to independent providers across mental health, weight loss, and primary care, with Trustpilot sentiment weighed down by billing and refund complaints.

Visit Klarity Health

Score Breakdown

DimensionFunction HealthKlarity Health
Overall Score76.3/100 ✓57.2/100
Trust & Safety30%78/100 ✓55/100
Value25%80/100 ✓50/100
Experience20%82/100 ✓55/100
Product Range15%60/10078/100 ✓
Reputation10%75/100 ✓55/100

At a Glance

Founded20212020
HeadquartersAustin, TXSan Mateo, CA
Publicly tradedNoNo
Treatment categories13
Treatments listed23
Starting price$49/mo$49/mo

Pricing Where They Compete

Prices shown are based on our most recent research and may not reflect current pricing. Telehealth providers update their pricing frequently. Always verify pricing directly with the provider before purchasing.

CategoryFunction HealthKlarity Health
Primary Care$49–$99
At-Home Blood Draw Add-On
$49
General Telehealth Visit (site-wide)

Function Health

+Trustpilot rating of 4.5/5 across 2,960 reviews, among the strongest in the diagnostics-membership category
+160+ biomarkers tested twice yearly at 2,000+ Quest locations nationwide, far exceeding a standard annual physical (roughly 20-30 markers)
+Flat, transparent annual pricing ($365/year) visible before any intake or consult
−Reaching live customer support can be slow, per patient reports
−Results depend on Quest blood-draw logistics; a subset of patients report an inconsistent draw experience
−Membership covers testing and clinician-reviewed insights but not ongoing prescribing or treatment for abnormal results
Read the full Function Health review →

Klarity Health

+Very broad marketplace reach — 500+ specialties, 2,000+ providers, and coverage in all 50 states
+Low advertised entry price ($49 self-pay, $51 for ADHD initial visit) with broad insurance acceptance (400+ plans)
+Appointments generally available within 24 hours
−Prescribes Schedule II-V controlled substances via telehealth, which depends on DEA telemedicine flexibilities currently extended only through 2026-12-31 — a future rule change could disrupt care continuity
−Independent Trustpilot rating (3.8/5, 574 reviews) is notably weaker than the platform's own marketing statistics, with recurring surprise-charge and refund-refusal complaints
−Cancellation fees reported as high as $120, sometimes charged despite a week's advance notice
Read the full Klarity Health review →

Function Health vs Klarity Health — FAQ

Is Function Health better than Klarity Health?

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Function Health scores higher overall in our independent evaluation (76.3/100 vs 57.2/100), leading on trust & safety, value, experience, reputation. Klarity Health comes out ahead on product range.

Is Function Health or Klarity Health cheaper?

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Their entry prices are similar — both start around $49/mo. Real cost depends on the specific treatment: compare the pricing tables on each review, since inclusions like consults, labs, and shipping differ.

What do Function Health and Klarity Health both offer?

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Both platforms treat Primary Care. Function Health covers 1 treatment category total and Klarity Health covers 3.

Still deciding?

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