Girls, you have using the period tracker app to keep a track of your menstrual cycles. But what if your privacy is at stake. Your secrets could be out, to the extent that information like the last time you made out or what contraceptive you used, is getting stored.

The apps are quite helpful to women in tracking their cycle and helping users know their right times to conceive.

A recent study has shown the applications share the data with social media giant Facebook.

According to a news report, UK-based advocacy group Privacy International recently exposed these apps 'dubious practices'.

In a study, 'No Body's Business But Mine: How Menstruation Apps Are Sharing Your Data', which many many such apps, revealed that two such apps Maya by Plackal Tech and MIA by Mobapp Development have shared highly personal information with Facebook to target advertisers.

The applications use Facebook's Software Development Kit (SDK) helps to show target audience. Shockingly, the audience need not also be a Facebook user.

Although confidentiality is medical ethics, it shows that these apps followed none.

The India-based Maya has over 5 million downloads while the Cyprus-based MIA has over 2 million users globally.

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