Period trackers: How apps exploit one’s menstrual cycle

“I was so excited back then that I told a friend about it. She asked me if I was sure it was a safe option. She was involved in internet politics,” Kochsiek recalls.
Representative image
Representative image


As a late adopter of smartphones, Marie Kochsiek couldn’t help but feel excited the first time she encountered the millions of apps available on the market. Period tracking apps, especially, caught her attention. Finally, she thought, she wouldn’t need to manually fill in the papers her gynaecologist handed her after every visit, but instead she could digitally monitor her menstrual cycle.

“I was so excited back then that I told a friend about it. She asked me if I was sure it was a safe option. She was involved in internet politics,” Kochsiek recalls. Behind the pink interfaces and mascots, some apps track more than a user’s period. They often have access to a user’s name, location, email address, browsing history and more — all to provide targeted advertising. When reports started to emerge on how these apps monetise and sell user information to third parties, Kochsiek was concerned but refused to go back to the old analog way.

Instead, Kochsiek felt motivated to develop an alternative app called .drip—a cycle tracker that only stores data on your device. As with other cycle apps, .drip allows users to monitor their menstrual health and keep track of their flow and fertile days. The difference is that users don’t have to agree to invasive practices, such as permitting an app to access their microphone or having intimate data, like sexual encounters or a week of heavy menstrual flow, stored on a company’s servers many miles away from them. But the popularity of non-commercial trackers lags far behind bigger players like Mi Calendario Menstrual, Flo and Clue, which add up to 160 million downloads across mainstream app stores.

The US Supreme Court’s decision to reverse Roe vs. Wade, a 1973 decision establishing a federal — and constitutional — right to terminate a pregnancy, has sparked new fears about how companies use menstrual data. “It seems as if these [popular] companies have more to gain from me tracking my menstrual cycle than what I get as an individual. The gain for their commercial business is larger,” says Julia Kloiber, co-founder of SUPERRR Lab, a feminist organisation advocating for equal digital futures. For Kloiber, non-commercial trackers pose a safer option to track periods. “It’s important that these alternatives are being developed so people have the option to switch,” Kloiber says. More free and non-commercial alternatives have entered the market in the past few years. They are steering the conversation toward data protection, but also shifting it away from the mass-market approach for these apps.

And that is allowing for space for people with varied identities and needs. Take for example Periodical, a gender-neutral tracker that works offline and only stores data on your phone or memory card. Like .drip, Periodical is open source, which means that the code behind the app is free to share and check for data security issues, for instance. Open source technology stays in conversation with the community, says Kochsiek.

On June 13, a Spanish tech non-profit called Eticas released a report analysing the privacy practices of 12 popular fertility apps. The report concluded that only one of them, WomanLog, didn’t sell or share user data under any circumstance. Research into period trackers and their use of personal data goes back a few years. In 2019, a UK-based charity, Privacy International, warned how five period trackers shared user data with Facebook and other third parties for commercial purposes.

This article was provided by Deutsche Welle

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