Case Study: Flutter achieves stronger user retention and increased monthly active users with Carnival.io

How the Flutter App Is Changing Women’s Health with Artificial Intelligence

Flutter is an iOS app for women’s health founded by Jason Curry to address a gap he experienced firsthand when his wife struggled with endometriosis. The app combines period tracking, a daily physical and emotional journal, exportable logs for doctors and a community feature, while tackling the dual challenge of building product-market fit and overcoming tough user acquisition and retention dynamics in the mobile health space.

To meet those challenges Flutter added AI-driven features—a chatbot and machine learning to surface patterns in anonymized health data for earlier detection of reproductive disease—plus multi-channel acquisition experiments and tailored re-engagement messaging via Carnival.io. The approach has improved monthly active users, delivered tangible value to users and clinicians, demonstrated potential to reduce late-stage interventions, and positioned the company for a planned funding round to accelerate growth.

Flutter