Period trackers
Stardust privacy rating
Period tracking app with cycle predictions, symptom logging and moon-phase features, funded by subscriptions. Health data is stored against a random account ID, separate from contact details.
Summary
Stardust scores 7 out of 100 (grade F) on the period trackers criteria. It partly meets no ads or data sales. It does not meet open source, no trackers or telemetry, independent audit, data stays on device and no account needed. It is based in the United States: Five Eyes member; subject to the US CLOUD Act.
Score 7 out of 100. How scoring works
Criteria
- No
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No
No trackers or telemetry Weight 3 of 3
Are the website and apps free of third-party trackers, with any analytics anonymous and any telemetry off by default?
The Exodus report finds AppsFlyer, Google CrashLytics, Mixpanel, OneSignal and other trackers, and the website loads Google Tag Manager and New Relic.
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Partial
No ads or data sales Weight 2 of 3
Is the product funded without advertising, ad targeting or selling user data?
Funded by subscriptions with no data sales, but with consent device data is shared with AppsFlyer and Firebase to target Stardust's own ads.
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No
Independent audit Weight 2 of 3
Has an independent security or privacy audit been published within the last three years?
No independent audit is published.
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No
Data stays on device Weight 3 of 3
Is cycle data stored only on the device by default?
Health data is stored on Stardust's servers, encrypted and linked to a random account ID, but not end-to-end encrypted.
- No