DuoSync is a period tracker built for men. Built to help you be a more supportive partner, better understand her period, and stay prepared for her cycle changes. DuoSync is the one app to stay in sync with her.

Once you input your partner's cycle start date you will receive notifications before important cycle changes and receive reminders and suggestions based on the phase of her period.

Once you input your partner's cycle start date you will receive notifications before important cycle changes and receive reminders and suggestions based on the phase of her period.