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Function Health vs InsideTracker: Which Is Better?

Head-to-head comparison of Function Health and InsideTracker 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 58.4/100), leading on trust & safety, value, experience, product range, reputation. InsideTracker has the lower entry price (from $12/mo vs $49/mo), so the better value depends on which treatment you need.

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
58

Biomarker-analytics platform selling Quest-drawn blood panels plus an annual membership that turns results into nutrition, supplement and lifestyle recommendations; no prescribing.

Visit InsideTracker

Score Breakdown

DimensionFunction HealthInsideTracker
Overall Score76.3/100 ✓58.4/100
Trust & Safety30%78/100 ✓66/100
Value25%80/100 ✓50/100
Experience20%82/100 ✓62/100
Product Range15%60/100 ✓50/100
Reputation10%75/100 ✓62/100

At a Glance

Founded20212009
HeadquartersAustin, TXCambridge, MA
Publicly tradedNoNo
Treatment categories12
Treatments listed22
Starting price$49/mo$12/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 HealthInsideTracker
Primary Care$49–$99
At-Home Blood Draw Add-On
$12
InsideTracker Membership ($149/year)

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 →

InsideTracker

+Published pricing, with blood draws at Quest Diagnostics locations nationwide and a mobile-draw option
+Ultimate panel spans roughly 40-50 biomarkers across 10 healthspan categories with a longitudinal dashboard for repeat testing
+More than 15 years of operating history, with HSA/FSA eligibility via Truemed
−No clinician consults or prescriptions; results are informational and must be taken to one's own doctor for treatment
−Mandatory $149/year auto-renewing membership on top of per-test fees; quarterly Ultimate testing runs roughly $1,500/year
−Trustpilot complaints cite unexpected renewal charges and legacy lifetime-access users being pushed into the paid membership
Read the full InsideTracker review →

Function Health vs InsideTracker — FAQ

Is Function Health better than InsideTracker?

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Function Health scores higher overall in our independent evaluation (76.3/100 vs 58.4/100), leading on trust & safety, value, experience, product range, reputation. InsideTracker has the lower entry price (from $12/mo vs $49/mo), so the better value depends on which treatment you need.

Is Function Health or InsideTracker cheaper?

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InsideTracker has the lower starting price (from $12/mo vs $49/mo for Function Health). Starting prices are for the cheapest treatment each offers — compare the specific treatment you need, and check what each price includes.

What do Function Health and InsideTracker both offer?

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Both platforms treat Primary Care. Function Health covers 1 treatment category total and InsideTracker covers 2.

Still deciding?

Function Health alternativesInsideTracker alternativesTake the Match Quiz