From a period tracker built in Belarus to a billion-dollar platform serving 420 million users—the Flo Health story is one of the most remarkable growth trajectories in digital health.
Co-founded by Dmitry and Yuri Gurski in 2015, the company’s journey began with simple cycle tracking. The founders’ backgrounds in fitness and health apps informed the first version—an intuitive interface that made period tracking accessible. Early growth came organically. App store algorithms favored the platform because users kept returning, creating a virtuous cycle of discovery and retention.
Strategic product expansion drove continued growth. What started as period tracking evolved to include ovulation monitoring, pregnancy tracking, and most recently perimenopause support features. The launch of comprehensive women’s health tracking means users don’t age out of the platform—a woman who started tracking periods can continue through every reproductive life stage.
Funding milestones marked the journey: $1 million seed round in 2016, $12 million Series A in 2018, and the transformative $200 million Series C in 2024 that achieved unicorn status. With 77 million monthly active users and 6 million paying subscribers, the business model has proven sustainable.
Now the company has built regulatory-ready infrastructure for the next chapter: clinical-grade features that could transform a consumer app into a medical device platform.