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  • WO Calendar screenshot 1
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About WO Calendar

WO Calendar is a simple and private calendar for your period, your intimate life and your pregnancy. No sign-up and no ads: your data stays on your iPhone. KNOW WHAT'S COMING • Next period prediction based on your own cycles • Fertile window and ovulation right on the calendar • Your cycle day, and a heads-up when your period is late • "My period started today" in one tap LOG YOUR DAY IN SECONDS • Flow: light, normal or heavy • Intimate days, with or without protection • Mood, symptoms and personal notes UNDERSTAND YOUR BODY • Average cycle length and the history of your last cycles • Flow distribution and your most frequent symptoms • A PDF report to take to your doctor REMINDERS • Your period is coming in 2 days • Your fertile window starts today • Daily birth control pill, at the time you choose PREGNANCY, WEEK BY WEEK • Gestational age from your last period or due date • Your baby's size every week • Appointments, tests and vaccines, weight and a symptom journal • Bump photos, kick counter and contraction timer • Hospital bag checklist • A beautiful card to share the news HOME SCREEN WIDGET See your cycle day and next period, or your pregnancy week and baby size, without opening the app. PRIVATE BY DESIGN • No account, no sign-up • Your data stays on your device • Lock the app with Face ID or your passcode • Export and import a backup whenever you want Available in English and Portuguese. WO Calendar is not a method of contraception and does not replace medical advice. Predictions are estimates based on the data you enter.

What’s new

Version 1.2.0 · Updated October 17, 2026

A big update to WO Calendar: • Predictions for your next period, fertile window and ovulation • Mood, symptoms and notes for each day • Mark intimate days as protected or unprotected • New statistics with your cycle history and a PDF report for your doctor • Reminders for your period, fertile window and daily pill • Lock the app with Face ID • Home Screen widget • Pregnancy mode, week by week: appointments, weight, kicks, contractions, bump photos and a card to share the news • A fresh new look with Liquid Glass

App privacy

The developer, Jose Rodrigues da Costa Neto, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to WO Calendar

Looking for apps like WO Calendar? Here are 6 similar apps on the App Store. The highest rated is Intima Tracker (5.0/5), and all 6 are free to download.

WO Calendar vs. alternatives
App Rating Price Last updated Compare
WO Calendar – Free October 17, 2026
FemTrack – Free Nov 24, 2024 Compare
Intima Tracker 5.0 / 5 (1) Free Sep 29, 2026 Compare
Luna Sync - Period & Cycle Log – Free Oct 5, 2026 Compare
Moon Days Calendar 4.0 / 5 (4) Free Dec 24, 2025 Compare
Mind Movies Matrix 2.3 / 5 (12) Free Oct 6, 2026 Compare
Digital Khovd – Free Apr 30, 2026 Compare

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