“everything, absolutely every piece of information is locked behind a paywall. very disappointing.”
Independent automated assessment · 6 signal sources · 1,839 reviews scanned · analyzed 2026-10-05.
Flo Ovulation & Period Tracker
Flo Health Inc.Flo is a science-backed cycle, ovulation, pregnancy, and period tracker with…
4.7 ★5,126,671 ratings
100M+Downloads
4+Age rating
—App size
Free · In-app purchasesIn-app purchases
About this app
Flo is a science-backed cycle, ovulation, pregnancy, and period tracker with over 570 million downloads worldwide.*
Track your period (regular or irregular), predict ovulation, and learn to spot your fertile signs, follow changes to your baby and your body with a pregnancy tracker, and explore common perimenopause symptoms. Flo is here to support your whole menstrual cycle and female health journey.
🌍 Is my data safe with Flo? Your health data deserves the highest level of protection.
Flo is the first and only period tracking app with dual ISO 27001 and ISO 27701 certifications, internationally recognized as the gold standard in data protection. In 2025, Flo was recognized as ISO 27001/Information Security Management System Team of the Year at the PICCASO Privacy and Security Awards, honoring our excellence and commitment to privacy-first design.…
Preview
Real screenshots from the store listing.
Independent evidence report
The evidence behind this assessment
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
This analysis describes version 10.6.0 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-05 . The app may have changed since.
The store currently lists version VARY, updated 2026-09-23.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
3 or more themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
80–89% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
From the package we downloaded and read — version 10.6.0, scanned 2026-09-19.
Permissions Android classifies as dangerous
1–2 requested
Counted against the eighteen permissions listed in collect-package.ts. A dangerous permission is one Android asks the user to grant; requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
1–2 found
Advertising SDKs in the scanned package
None found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
The catch list 1
Charges we publish at a strength we stand behind: measured from an artefact, agreed by independent sources, or reported by enough users to clear that charge's own published bar.
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Raised by 42 distinct reviewers — 2.3% of the 1,839 reviews scanned on this store leg (Google Play).
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 4
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Hard to cancel
Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.
What we saw: Hard to cancel: raised by 5 distinct reviewers (0.3% of 1839 reviews scanned)
Reported by users: Tracking and data collection concerns
The app ships session-recording or a wide tracking stack, holds permissions that read personal data, or is reported by users to sell, leak or over-collect it. The evidence line says which of those was observed.
What we saw: Data & privacy concerns: raised by 7 distinct reviewers (0.4% of 1839 reviews scanned)
Reported by users: Upgrade prompts use guilt-trip wording
Declining an upgrade is written as a loss ('No thanks, I don't want to improve'), or users report being repeatedly pushed to subscribe during normal use.
What we saw: Constant upsell pressure: raised by 9 distinct reviewers (0.5% of 1839 reviews scanned)
Reported by users: Aggressive ad load
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
What we saw: Aggressive ad load: raised by 6 distinct reviewers (0.3% of 1839 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“The app is quite useful, but I think it's insane that you have to PAY to be able to access features for basic health information, such as how to keep ourselves clean.”
“It felt like absolutely everything was locked behind premium except the most simplistic tracking”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version VARY.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.