Cyclisity TCOYF Cycle Tracker

Cyclisity is the official cycle and ovulation tracking app of Taking Charge of Your Fertility (TCOYF). Developed with Toni Weschler, MPH, and a team of designers, developers, and physicians, it aims to be the world’s best symptothermal method tracking app. It follows TCOYF’s science-based guidelines to help you confidently chart your cycles and practice FAM, with in-app references guiding key educational concepts from the book.

Paid features include two tracks (Ovulation/Period Tracking or Pregnancy Achievement), an ovulation and period tracking chart, auto-detection of peak days and coverlines, book references, community forums, and upcoming features like secondary fertility sign charting and thermometer integrations. The app emphasizes privacy and data ownership, with no predictive algorithms and a commitment to data never being sold or forwarded without user instruction. A 1-month free trial is followed by monthly or annual pricing, designed to sustain Cyclisity without advertising or data selling.