PeriodBro is described as 'Cycle-tracking app for partners, fathers, and caregivers who want to show up for the women in their lives' and is a Period Tracker in the sport & health category. There are more than 25 alternatives to PeriodBro, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Apple Watch apps. The best PeriodBro alternative is drip., which is both free and Open Source. Other great sites and apps similar to PeriodBro are Mensinator, Menstrudel, Peri and Tyd.