Period vs Dusk

View where you are in your cycle with the Period Tracker app. You have the option to manually log your periods, ovulation test results and keep track of your menstrual cycle symptoms. Get insights into how the probability of peak fertility varies for women with the same cycle length as you. This app is designed for use by women who want to predict their periods, track their cycles or try for a baby. It should not be used as a method of contraception.

Most cycle apps are built for periods. Dusk is built for one thing: helping you get pregnant. Track your cycle, and Dusk predicts your fertile window — then reminds you the moment it opens. No digging through calendars. No guessing. Just a clear answer to the only question that matters when you're trying: is today the day? WHY DUSK - Fertile window reminders — get notified when your window opens, peaks, and closes, so you never miss your best days - Smart predictions — Dusk learns your cycle and gets more accurate every month - Built for TTC only — no period-product ads, no pregnancy-mode clutter, no features you don't need - Log what matters — BBT, LH/OPK test results, cervical mucus, symptoms, and intercourse in seconds - Cycle insights — see your patterns clearly: cycle length, luteal phase, ovulation trends YOUR DATA STAYS YOURS Fertility data is deeply personal. Dusk treats it that way. - No ads. No selling your data. Ever. - Data stored securely in the EU - Delete your account and every trace of your data in one tap - Works offline — log anywhere, sync when you're back MADE FOR THE TTC JOURNEY Whether you're in your first cycle of trying or you've been at this a while, Dusk keeps things simple, honest, and pressure-free. Open the app, see where you are in your cycle, know what to do next. No streaks. No gimmicks. Just the clearest picture of your fertility, every day. Download Dusk and know your fertile window — before it passes you by.