Clue: Period & Cycle Tracker

A period tracker that covers the whole cycle

Clue is a period and cycle tracker published by BioWink, and the developer describes its team as women-led. It covers periods, fertility, ovulation and pregnancy in one app, so the same record can follow someone from their regular period through to pregnancy.

The listing describes a calendar view for planning cycles. Periods, fertility and ovulation all sit on that calendar, so the cycle can be read as one timeline rather than as separate logs.

Logging periods and reading the calendar

Period tracking is the core function. The developer says the calendar view lets people plan around their cycle with more confidence.

Because the calendar holds periods alongside fertility and ovulation data, a person can look back over several months at once. The listing does not describe any further chart or export options.

Ovulation calculator and fertility tracking

An ovulation calculator is included, and it is listed next to fertility tracking. Both use the same cycle record as the period calendar.

Fertility and ovulation are named in the listing as stages the app follows, so a person tracking conception and a person just watching their cycle use the same underlying data.

Pregnancy tracking and the expert guide library

Pregnancy is tracked as one of the life stages the app covers, after periods, fertility and ovulation. The developer lists it alongside the rest of the cycle features rather than as a separate product.

The app includes more than 300 guides written by experts on menstrual cycles, fertility, pregnancy and related topics. The guides are opened inside the app, so reading them does not require leaving it.

How cycle data is protected

The developer says Clue is protected by strict EU data privacy law and presents the app as privacy-first. The listing also calls it a free period tracker.