Clue

helloclue.com

Clue is the #1 doctor-recommended period & cycle tracking app available on iOS, Android, and Apple Watch. Across the globe, more than 10 million active users rely on Clue to help understand their bodies better and keep their data safe and private. Clue’s mission is for women and people with cycles to make good choices for themselves, and live full lives not in spite of their biology, but in tune with it. Clue was co-founded in 2012 by a Danish female entrepreneur, Ida Tin, who is convinced that technology will profoundly change the future of family planning.