Otty

About Otty

Otty is a period and menstrual cycle tracker built for couples as well as individuals. It shows the next period and ovulation day in advance, with a daily tip and the reason behind it, so the person tracking and a partner can both understand what the day is likely to feel like.

It is aimed at people who menstruate and the partners who want to support them, and it works the same whether the cycle belongs to you or to your partner. Each phase is shown on a shared calendar that both phones display in the same way, with suggested things to do and avoid during that phase.

The app is positioned as a companion rather than a clinical tool, and it is available on the App Store. The site states that it is private by default and that nothing it shows is medical advice.