Tyd is described as 'Lets you track your period while keeping your data private. Tyd will never collect or sell your data, require you to log in, show you ads, or sell you a subscription. Plus, it has unique features, like a timer that notifies you when it's time to change your tampon, and' and is a Period Tracker in the sport & health category. There are more than 25 alternatives to Tyd for a variety of platforms, including Android, iPhone, iPad, Apple Watch and Android Tablet apps. The best Tyd alternative is drip., which is both free and Open Source. Other great apps like Tyd are Mensinator, Menstrudel, Period Tracker and Flo Period & Ovulation Tracker.