How iOS and watchOS menstrual cycle tracking works

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Juliana Augusto

He is 32 years old, from São Paulo and product manager, working with digital products since 2008. Passionate about technology, racing and travel.

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For the last three months, I've been using the feature Cycle Tracking (Cycle tracking) from iOS and watchOS to record and monitor my menstrual cycle and my fertility. It's not the first time I've used such services via the app (I've been using Clue for a long time) and I confess that Apple's solution surprised me too much about the experience and the functions offered.

Cycle Tracking

Cycle Tracking is a function within the app. Health (Health), which already existed in older versions of iOS, but now it brings some news in monitoring the health of the user. One is a function that maps and monitors menstrual flow and changes in the woman's daily life.

Note, before continuing, that I prefer to use the iPhone and Apple Watch configured for the English language but this new feature is already fully in Portuguese, too.

How does Cycle Tracking work?

Once we start using the feature, we are not asked for general information about the cycle such as: how many days does the average menstrual cycle last, what is the intensity of the flow and what type of symptoms are usually seen. This information is all recorded on your profile.

At this point, the app gives you a preview of when your next cycle and period will be, but always warns that this is only a forecast (ie Apple is not responsible for any unforeseen and the user can not rely on only on that information).

So when the menstrual cycle actually arrives, the woman can add information about the day to day cycle, both through the iPhone and Apple Watch (which in my incredible opinion; I will talk about it later), having a record of the characteristics and symptoms ms to ms. Thus, Cycle Tracking can improve the experience over time based on this information provided by the woman; As it feeds the database with data, the predictive function of cycle start and start and end identification of the fertile period becomes more accurate.