“I've been using this app for 6 years now and loved it but it has so many ads built in now that it is not enjoyable and I must look for an other app...”
Independent automated assessment · 6 signal sources · 1,049 reviews scanned · analyzed 2026-10-04.
4.9 ★612,763 ratings
10M+Downloads
12+Age rating
213 MBApp size
FreeIn-app purchases
About this app
Period Tracker and Calendar is an easy-to-use application that helps you track your cycle, ovulation, and fertile days. Whether you're planning a pregnancy, managing birth control, or just getting to know your cycle better, Period Tracker & Calendar is here to support you and take care of your needs along the way.
Period Tracker and Calendar is a CE Class I Medical Device (EU) intended to support tracking menstrual cycles and monitoring related symptoms. It processes user-entered data to generate predictions for upcoming periods and estimated fertile windows, so you can feel more prepared in your daily life with information tailored to your body.…
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.
App Store
This analysis describes version 13.3.0 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 13.3.1, updated 2026-10-01.
The app has been updated since this analysis. The findings on this page describe version 13.3.0, not the version now listed on the store.
Release notes for the newer versions, in the developer’s own words:
Version 13.3.1 · 2026-10-01
– You can now give Premium as a gift! A whole year of access for someone you care about. You can attach a message with a few warm words. Cycle stats, insights, health reports, and not a single ad. Everything it takes to feel looked after, wrapped up in one gift. – App performance has been improved. – Fixed minor issues reported by users. – Please send us your feedback!
Google Play
This analysis describes version 13.2.0 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 13.2.0, updated 2026-09-30.
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
1 theme 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
90% or more 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 13.2.0, scanned 2026-09-27.
Permissions Android classifies as dangerous
None 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
3–9 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 2
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.
Multiple ad networks bundled
The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.
What we saw: Bundles 5 distinct ad networks / mediation SDKs: AppLovin MAX, Fyber / Digital Turbine Exchange, Google Mobile Ads (AdMob / Ad Manager), Pangle (ByteDance) and 1 more
Price may differ from what you see here
The app ships a remote paywall-experimentation SDK, so the offer shown is configured server-side and may differ per user — including from anything we or a reviewer saw.
What we saw: Paywall is server-configured and A/B tested via RevenueCat Paywalls — the offer shown can differ per user
Context 1
Measured and published because a reader would want to know — deliberately not a charge. The measurement alone does not show a harm.
Cheapest and priciest options are far apart
The disclosed in-app purchases span an unusually wide price range. Published as context: the cheapest and priciest items may be different kinds of product entirely, so the spread alone deducts nothing.
What we saw: In-app purchases run from USD 2.49 to USD 69.99 — a 28x spread across 10 items
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: 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 7 distinct reviewers (1.3% of 519 reviews scanned)
In the app's own text: Paywall with no way past it
A paywall screen ships with no dismiss, skip or 'maybe later' affordance anywhere in the package, so the app's own text offers no way in without paying.
What we saw: Ships a purchase screen ("paywall") with no dismiss, skip or "continue free" text anywhere in the package
In the app's own text: A plan is pre-picked as 'recommended'
The purchase screen arrives with one plan already framed as the recommended or most popular choice, so the default is the app's preference rather than the user's. We do not compare the plans' prices, and only the app's own text evidences this, so it is shown, but never counted as a charge.
What we saw: Purchase screen steers the choice: "BEST DEAL"
Reported by users: Users describe the free version as usable
Reviewers repeatedly say the free version is worth using on its own. Nothing we can measure corroborates that — a free listing with in-app purchases looks identical whether the free tier is generous or a demo — so this is published as what reviewers say, not as a measured credit.
What we saw: Reviewers describe the free version as usable: raised by 5 distinct reviewers (1.0% of 519 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“this has way to many ads. and looses my data constantly. for someone who is irregular it's scary because you can't find when your last period was and if you can find it you have to go through 5 ads to get to it.”
“The extremely intrusive full screen ads are getting ridiculous and I'm considering uninstalling.”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 13.3.1.
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.