How private is your period-tracking app? Not very, study reveals

Research on more than 20 apps found that the majority collected large amounts of personal data and shared it with third parties

After the fall of federal abortion protections in the US, pressure has mounted on apps that collect pregnancy-related data to preserve people's privacy. A new study has found many of them do not hold up to scrutiny.

Experts at internet research non-profit Mozilla studied more than 20 pregnancy and period tracking apps for privacy and security features and said the results were grim.