Period Tracker
Know your cycle. Plan with confidence.

Set last period start date & average cycle length. We estimate the next dates locally.

Last start: Cycle (days): Calculate

About Us

Period Tracker keeps things simple and fast so you stay consistent.

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Designed for quick daily use.

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Local-first; your data stays with you.

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Looks great on phone or desktop.

Available on iOS & Android.

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Period Tracker HQ
Somewhere on Earth 🌍