PeriodCycle

PeriodCycle turns your cycle into a calm, readable timeline. One vertical
calendar shows everything you track - your own cycle and the cycles of
the people you keep an eye on - with predictions, fertile window and
notes overlaid on the same grid.

What you get:

* Predicted periods, ovulation and a three-day fertile window, computed
from the dates you log.
* A "next up" countdown for periods, ovulation or a cycle week of your
choice.
* Track up to 12 people on one shared calendar, each with their own
colour, history and predictions.
* Cycle-week filters (Period, Glow up, Ovulation, Slow down) and legend
chips for period, predicted, fertile, ovulation and note days.
* A day sheet with per-person status, quick logging and notes.
* Your data belongs to your account only - no ads, no trackers, no
third-party analytics. Delete anything you log at any time, or delete
your account entirely from Settings.

Predictions are estimates based on your own logs and are not medical
advice.