“Been using this for nearly a month and I have only logged two periods, the period week I downloaded the app and the one I had a month prior. I like all the various symptoms and journaling to keep track of your body and mood throughout…”
Independent automated assessment · 3 signal sources · 1,063 reviews scanned · analyzed 2026-10-04.
4.7 ★140,817 ratings
1M+Downloads
12+Age rating
197 MBApp size
Free · In-app purchasesIn-app purchases
About this app
Stardust is a free period, ovulation, and pregnancy tracker that helps you understand your period, hormones, and every phase of your menstrual cycle. We blend science, ancient wisdom, astronomy, and AI to make period tracking feel simple, intuitive, and meaningful. Track your period, log symptoms, follow hormonal changes, and watch your cycle unfold day by day. Stardust is the cycle tracker that turns daily period tracking into real self-understanding.
PERIOD TRACKER & CYCLE TRACKER
Decode your period and every phase of your menstrual cycle with a period tracker built to feel intuitive. - Predict your next period and spot PMS patterns before they start - Get personal daily insights based on your menstrual cycle and hormone patterns - See predictions for your period, PMS, cravings, moods, and fertility - Get enhanced cycle tracking insights using your sleep and activity data…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
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 3.9.4 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 3.9.4, updated 2026-09-16.
Google Play
This analysis describes version 5.29.0 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 5.29.0, updated 2026-09-16.
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
2 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
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence about the app, not a finding about it.
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 35 distinct reviewers — 6.3% of the 555 reviews scanned on this store leg (App Store).
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 2
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: 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 28 distinct reviewers (5.0% of 555 reviews scanned)
From the store listing: Usable without an account
The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.
What we saw: The store privacy disclosure (7 entries) links no contact details or identifiers to the user — consistent with an app that does not require an account. Self-reported by the developer.
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“surprised this app even has the ratings it does.as a whole I loved this app at first. I decided that what they offer as the premium options just weren't worth what they wanted for it.come to find out u can't even look back on past days in…”
“it's a good app and it's very intuitive but some of the features are hidden behind a paywall and I am broke I think this review explains itself k bye 🙂👍”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 3.9.4.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown10
Lowest$2.99
Highest$39.99
Monthly Plan $6.99
Monthly Plan$6.99
Annual Plan$29.99
Annual plan with 7-days trial$24.99
Annual Plan with 1 month trial$29.99
Show 5 more purchases
Annual Plan with 7-days trial$39.99
All Access$2.99
All Access$3.99
All Access$4.99
All Access$24.99
Google Play does not publish per-purchase prices.