Sabrina Nowicki is the Co-founder and CEO of Cyclisity, the official cycle tracking app of Taking Charge of Your Fertility by Toni Weschler, MPH. With a background in product design and software engineering, she leads the app's technical development and user experience.

Cyclisity takes a science-first approach — no predictive algorithms, no ads, and no selling user data. It helps women chart their cycles using the symptothermal method as taught in TCOYF, with in-app references back to the book for ongoing education. Fully self-funded so the team can always put users first.

Alongside the app, Sabrina's team has built a Circle community where FAM practitioners can share charts, ask questions, and support each other.