Summary at a glance
InsideTracker splits its price: $149 a year for the platform and $340 for a repeat Ultimate blood test, so the second test costs less than the first.
Function Health charges $365 a year for 160+ lab tests, two testing rounds and clinician review of every result.
InsideTracker's app rates 3.4 out of 5 across 341 App Store ratings, and login failures are the most repeated complaint in those reviews.
Function Health members' most repeated complaint is data: lab results do not sync out to MyQuest or any external app, though the PDF download works. Function now accepts inbound wearable data via Connected Apps.
Both now read wearable data. InsideTracker pulls sleep and activity into its scoring and daily tips. Function Health syncs steps, sleep and resting heart rate via Connected Apps but only displays them, without feeding them into its clinical review.
This article compares two blood-testing services on price, features and what reviewers say about them. We have not used either service, so nothing here is a first-hand account and none of it is medical advice. Markers for heart health, hormones, energy and sleep need a clinician who knows your history to interpret them. Talk to your doctor before you act on a result, start a supplement or change a medication.
InsideTracker Or Function Health: Which Should You Choose?
Pick InsideTracker if you already wear a tracker, want optimal zones instead of a lab's normal range, and plan to test again. Pick Function Health if you want the widest single panel and a clinician reading every result. InsideTracker starts at $149 a year insidetracker.com. Function Health costs $365 a year functionhealth.com.
The prices sit apart because the two sell different things.
InsideTracker charges for the platform and the blood test separately. The membership is $149 a year, and a repeat Ultimate test costs $340 rather than the $489 you pay the first time. Function Health puts 160+ lab tests, two testing rounds a year and clinician review into one membership.
Neither headline price is the whole bill. InsideTracker's membership renews yearly and every plan includes it. The $149 membership is sold on its own only outside the US and Canada. A mobile blood draw adds $119 in New York, New Jersey, Rhode Island, Hawaii, Arizona and Canada.
How Do InsideTracker And Function Health Compare?
Here are the two side by side. Prices and features come from each company's own pages, read on 14 September 2026 for InsideTracker and 8 July 2026 for Function Health.
Neither service measures anything between blood draws. InsideTracker reads sleep and activity from a connected Apple Health, Oura, Fitbit or Garmin account and feeds that into its daily tips. Function Health now syncs steps, sleep and resting heart rate from Apple Health, Oura, Fitbit and Garmin via its Connected Apps feature, but does not feed that data into its clinical review the way InsideTracker does. Lab results still do not flow out to any external app.
So the choice comes down to the panel, the analysis and the software you have to live with.
InsideTracker homepage listing fitness, nutrition, DNA and bloodInsideTracker
$149/year membership; $489 for membership plus the first Ultimate blood test
Function Health
$365/year
InsideTracker
Reads sleep from a connected Apple Health, Oura Ring, Fitbit or Garmin account and uses it in the ProTips and healthspan scores; it does not measure sleep itself
Function Health
Syncs steps, sleep and resting heart rate from Apple Health, Oura, Fitbit and Garmin via Connected Apps; displayed only, not used in clinical review
InsideTracker
No symptom log. There is a daily Action Plan check-in for habit goals, and food logging in the mobile app, which reviewers report is unreliable
Function Health
N/A - no symptom or daily log; the membership covers lab panels and clinician-reviewed protocols only
InsideTracker
Athletes and repeat testers who want optimal-range analysis and already own a wearable
Function Health
Proactive individuals wanting deep biomarker baseline
InsideTracker
People who want one clean test with no subscription, or who need the mobile app to be reliable
Function Health
Budget-conscious or those with severe needle phobia
Is InsideTracker Worth It?
The analysis is what InsideTracker's happiest reviewers talk about. One App Store reviewer who says they tried three services wrote: "Of the three, InsideTracker is easily the best for longevity/optimization. Analysis is highly personalized. The others are surprisingly generic." That review carries no date, and it is one person's account.
The app is the weak spot. InsideTracker holds 3.4 out of 5 across 341 App Store ratings, and reviewers there, none of them dated in what we read, keep describing the same failure: "More often than not, I encounter a situation where the login screen cycles continuously requiring me to close the app and try again." apps.apple.com
Features are also split between the website and the phone with no clear rule. A Google Play reviewer updated their review in September 2025 to say nothing had changed: "it's not an app so much as a dashboard. you can look at a few items, but if you want to delve any further it redirects you to the mobile website instead. I also cannot upload any tests results from my phone." play.google.com
The $249 DNA kit takes the sharpest criticism. Gene Food, which sells a competing genetic product, wrote in a review illustrated with April 2025 screenshots that the scoring is hidden: "SNPs that form the risk scores for the various genetic health traits are not disclosed making the DNA piece a bit of a “black box.”" mygenefood.com
One point in InsideTracker's favour: it has no complaints on file with the Better Business Bureau bbb.org.
Hand holding a phone running the InsideTracker analysis screenInsideTracker
Membership price is separate from test price, so repeat tests cost $340 not $489
Personalised optimal zones rather than a lab's normal range
You can upload results from your own doctor or 23andMe instead of buying a test
Syncs Apple Health, Oura, Fitbit and Garmin
App is the weakest part of the product; the App Store rating is 3.4 out of 5
Repeated login loops and lost check-ins reported over several years of reviews
Some functions work only on the web, others only in the app
Mobile blood draw adds $119 and is compulsory in five states and Canada
Is Function Health Worth It?
Function Health scores well in bulk. Trustpilot shows 4.3 out of 5 from 1,322 reviews trustpilot.com, and the iPhone app sits at 4.9 out of 5 across 23,000 ratings apps.apple.com. Function pays for a Trustpilot subscription and invites reviews, so that base leans towards prompted customers.
Breadth is the reason people sign up. The membership covers 160+ lab tests, twice-yearly and on-demand testing, clinician review and personalized protocols.
The loudest complaint is about what happens to your results afterwards. In an August 2025 Reddit thread, the top comment reads: "And the data is stuck into their platform. They no longer allow Quest to keep the data and there is no Apple Health integration." reddit.com Members in a December 2025 thread pushed back on the strongest version of that claim, saying the PDF download works: "I was easily able to download a PDF of my results and send it to my provider." reddit.com
Clinician notes divide people too. In a March 2026 thread, one member wrote: "I put my results into ChatGPT and got more helpful feedback than Function’s clinician notes." reddit.com
Support runs through chat and email, with no phone line. Through late 2025, App Store reviewers described an AI chatbot and email replies that gave different answers each time apps.apple.com.
The Function Health app showing 147 biomarkers, in-range counts and a 37.2 biological age on a phoneFunction Health
160+ biomarkers in one membership
2000+ lab locations
Clinician review of every result
HSA/FSA eligible, and no insurance needed
Still expensive at $365/yr
Blood draw required
Lab results stay inside Function's platform: no MyQuest sync and no outbound export beyond PDF. Function now accepts inbound wearable data via Connected Apps, but results do not flow back out
Support runs through chat and email only, with no phone line
Which One Is Worth Your Money?
Function Health is the better first test. You get 160+ lab tests, two testing rounds a year and a clinician reading every result for $365. InsideTracker is the better second and third test. Its $149 membership sits apart from the $340 repeat panel, and it feeds your wearable data into its scoring. Function now syncs wearable data too, but only displays it without using it in its clinical review.
Choose on what will annoy you least.
InsideTracker's app fails people at the login screen. Function Health keeps your results inside its own website. If you already have recent blood work from your doctor, InsideTracker lets you upload it and skip buying a test at all.
Check your state before you buy either one. InsideTracker charges $119 for a mobile blood draw and requires it in New York, New Jersey, Rhode Island, Hawaii, Arizona and Canada.
Anyone buying one broad baseline panel should start with Function Health. Anyone testing two or three times a year, especially athletes who already wear a tracker, gets more from InsideTracker.
Function Health ($365/yr) for your first panel, InsideTracker ($149/yr membership) for repeat testingFunction Health buys the widest single panel with clinician review. InsideTracker prices the platform apart from the test, so retesting costs $340, and it is the one that feeds wearable data into its analysis. Function now syncs wearable data via Connected Apps but only displays it.
Blood work, scans, test results, medical reports — finally in one place and connected to how you actually feel. aelívra tracks biomarkers and health records over time, so you can see what's trending in the right direction and walk into your next appointment knowing exactly what to discuss.
How We Compared InsideTracker And Function Health
We have not used either service. Every user experience here comes from reviews we read in full.
For InsideTracker we read its App Store page, which sits at 3.4 out of 5 from 341 ratings, with 10 reviews captured word for word. We added its Google Play page, 4.4 out of 5 from 244 reviews with three captured. We read its Better Business Bureau profile, which holds one customer review and no complaints. We read three independent testers' write-ups. Two of those testers, Gene Food and Nucleus, sell competing tests, so we name that wherever we quote them.
We could not read the Reddit threads about InsideTracker, and Trustpilot would not let us read its page either, so the independent evidence for it is thinner.
For Function Health we read Trustpilot, 4.3 out of 5 from 1,322 reviews with about 20 read in full. We read its App Store page, 4.9 out of 5 from 23,000 ratings with 10 read. We added two testers' write-ups and 10 Reddit threads holding roughly 300 comments. Prices and features come from each company's own pages.
Function Health's review base is far bigger than InsideTracker's. That is a difference in how much evidence exists, not proof that one product is better.
Frequently asked questions
Which is cheaper, InsideTracker or Function Health?
The InsideTracker membership is $149 a year, against $365 a year for Function Health. Add a first Ultimate blood test and InsideTracker comes to $489.
Can you use InsideTracker without buying a blood test?
Yes. The membership lets you upload up to 30 sets of results, including blood work from your own doctor or a 23andMe file.
Does Function Health connect to a wearable or Apple Health?
Yes. Function Health now syncs steps, sleep and resting heart rate from Apple Health, Oura, Fitbit and Garmin via its Connected Apps feature. The wearable data is displayed but not used in the clinical review. Lab results still do not flow out to Apple Health, MyQuest or any external app.
Do both need a blood draw?
Yes. Function Health uses Quest locations. InsideTracker requires a mobile draw costing $119 in New York, New Jersey, Rhode Island, Hawaii, Arizona and Canada.
What else is worth a look?
Australians can compare both against Everlab, which bundles a doctor review and a DEXA scan from AUD $299.
Sources
Cameron founded aelívra after years of living an unknown no one could answer — navigating chronic health complexity through a medical system that wasn't built for it. That experience became a conviction: everyone deserves to feel truly alive, and no one should have to accept not knowing as a way of life. His work sits at the intersection of data science and functional health and wellbeing, turning the latest trusted medical research across news, health, wearables, biomarkers, and more into advice everyday people can use on their journeys toward feeling better. Every article is grounded in peer-reviewed evidence and linked to its primary source. This content is for informational purposes only and does not replace medical advice.
