Know Her

See the current cycle phase at a glance — Period, Fertile Window, Balanced, or Premenstrual — with smart predictions that improve over time.

Up Ahead shows the next three phase transitions with dates, so you can plan trips, conversations, and special moments around the cycle.

Six real-time indicators — fertility, energy, mood, desire, comfort, and sensitivity — so there are no more surprises on the road.

Curated insights tailored to the current phase and position in the cycle, grounded in peer-reviewed research.

All data lives on the device, never on a server. No account required, no tracking, no ads. Just the two of you.

Light and dark mode, clean calendar view, quick log entry, and a design that feels as good as it works.