Period tracker Stardust shares users’ health data with analytics firm, says Mozilla research

Mozilla research has revealed that the period-tracking app Stardust shares sensitive user health data with a third-party analytics firm, contradicting its privacy claims. The findings highlight ongoing concerns regarding data privacy in health-focused mobile applications.
Why it matters
It underscores the risks users face when trusting health apps with sensitive information, especially in the context of changing reproductive rights legislation.
“Your data is private. Period,” says period tracker Stardust on its website. As new research by Mozilla discovered, some users might find that claim to be a stretch.
The article relies on research findings to report on privacy practices without taking a partisan stance.
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