Some warnings 6 users report trouble cancelling. Nothing confirmed. Checked: 333 reviews, the store listing and the privacy label.
From our automated analysis, 24 Oct 2026. Every label links to its evidence in the full report below.
This analysis describes version 1.50.0 of the app, analyzed 2026-10-24 .
The store currently lists version 1.50.0, updated 2026-10-22.
Store screenshots supplied by the developer.
Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data.
Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change.
NOW AVAILABLE: HOME OR OFFICE BLOOD DRAWS
Schedule a concierge blood draw at your home or office. A licensed specialist comes to you and completes your blood draw in under 20 minutes. Available in select locations.
160+ LAB TESTS
Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more.…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
Open observations that have not cleared the evidence bar.
Hard to cancel: raised by 6 distinct reviewers (about 1 in 56 reviews we read)
This observation has not cleared the required evidence standard.
Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.
Nothing was published as a thing to watch for in this assessment. That is not a finding that nothing is wrong with the app.
333 reviews read for this analysis. Each observation keeps the sample and store it was based on.
Impossible to cancel — Good luck trying to cancel your membership if you ever need to. Just about impossible.
Scummy Company Cancel Nightmare — This company will try everything to not let you cancel. I literally received 4 prompts trying to stop me from canceling, and on top of that it says it takes 5 business days to cancel, which they are…
scammy billing — will try to charge you any chance they get. hard to cancel, bill you without warning, zero support.
A sampled review illustrates one person’s experience. It does not establish a finding on its own.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
This analysis describes version 1.50.0 of the app, analyzed 2026-10-24 .
The store currently lists version 1.50.0, updated 2026-10-22.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
This update includes: - UX improvements and bug fixes
Appworthy
function-healthAssessed 2026-10-24 from 333 user reviews, the store listing and its privacy label. We have not scanned the app's package, so nothing on this page was read from inside the app itself.
What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
This assessment is produced automatically. Three independent signals are read — user reviews, the store listing and the store privacy disclosure — and each candidate finding is filed under the sources that support it.
No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every subscription bills weekly; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.
There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.
Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.