--- title: "Period Calc: Private Period Tracker for Muslim Women" description: "Your next period, fertile days and fasting days, with the Hijri date on every day. No account, no ads — your cycle data stays on your iPhone." url: https://periodcalc.app/ lang: en --- Period tracker & planner for iPhone # The period tracker made for *Muslim women* Your next period, fertile days and fasting days — with the Hijri date on every day. Private, year-round, in your language. [Download on the App Store](https://apps.apple.com/app/id6814298894) [Use the free period calculator](https://periodcalc.app/period-calculator/) Free download. Premium is an optional subscription. ![Period Calc on iPhone: the next period in 5 days, and a calendar with period, fertile and ovulation days in Hijri and Gregorian dates](https://periodcalc.app/assets/screens/en/01_hijri_calendar-440.webp) Hijri date on every day Your data stays on your phone - No account - No ads - Your data stays on your phone - PIN & Face ID lock - 50+ languages - Hijri date on every day All year, every month ## Everything your month needs, in one calm calendar Your cycle, your fasting days and your worship, together — in the Hijri and the Gregorian calendar at once. ### Your calendar, with the Hijri date See your period, predicted days, fertile window and ovulation on one clear calendar, with the Umm al-Qura Hijri date under every day — adjustable by a day or two to match your country. ### Fasting days, every month Mondays and Thursdays, the White Days, Arafah, Ashura and the six days of Shawwal — with the days your period is expected marked, so you can plan ahead. ### Trying to conceive Your fertile window, your estimated ovulation day and when to take a pregnancy test. Premium adds your best days, day by day, and today’s chance of pregnancy. ### Prayer & purity guide Which day of your bleeding it is, the general limits of the Hanafi, Maliki, Shafi’i and Hanbali schools, ghusl and the signs of purity. General rules — not a fatwa. ### A report for your doctor Premium A PDF of your cycles, period lengths and symptoms, made on your phone and shared only where you choose. ### Private by design No account and no ads. Your cycle data stays on your phone, behind an optional 4-digit PIN with Face ID or Touch ID. Reminders are discreet by default. ### Pregnancy mode Your due date in Hijri and Gregorian, with your current week and trimester. ### And the everyday essentials - Log flow, mood and symptoms in one tap, and add a note - Gentle reminders two days before your period and on the day - Cycle history with your average cycle and period length - A full 12-month forecast and your symptom patterns, with Premium - A heads-up before Ramadan if your period may overlap it Inside the app ## Made to be calm, clear and kind Every screen is in your language, with the Hijri and Gregorian dates side by side. ![The calendar with Hijri and Gregorian dates, period days, fertile days and the ovulation day](https://periodcalc.app/assets/screens/en/01_hijri_calendar-440.webp) Hijri and Gregorian, side by side ![This month’s fasting days, with the days your period is expected marked](https://periodcalc.app/assets/screens/en/02_fasting-440.webp) Your fasting days, every month ![Today’s chance of pregnancy on a five-level meter, and the best days to conceive](https://periodcalc.app/assets/screens/en/03_conceive-440.webp) Your best days to conceive ![A PDF report of cycles, periods and symptoms to share with a doctor](https://periodcalc.app/assets/screens/en/04_report-440.webp) A report for your doctor Free and Premium ## Free to use. Premium when you want to plan ahead. Everything you need to follow your cycle is free. Premium is an optional subscription. ### Free For everyone - Next-period prediction from your own cycles, with a countdown - A calendar with period, fertile and ovulation days, and the Hijri date on every day - This month’s fasting days, with your expected period days marked - Trying to conceive: your fertile window, ovulation and test day - The prayer & purity guide for the four schools - Log flow, mood, symptoms and notes - Discreet reminders, and an app lock with PIN and Face ID - Pregnancy mode with your due date in Hijri and Gregorian - A heads-up before Ramadan if your period may overlap it ### Premium Optional subscription - A fasting planner, with a reminder the evening before each fasting day - Your best days to conceive, day by day, and today’s chance of pregnancy - A PDF report of your cycles and symptoms for your doctor - Purity reminders for your school - A full 12-month forecast of your coming cycles - Today’s tip for your cycle phase, and your symptom patterns - A plan and counter for make-up (qada) fasts, plus the Ramadan and Hajj planners - Export your data as a CSV file Premium renews monthly or yearly through your Apple Account. The price in your currency is shown before you buy, and you can cancel anytime in Settings › your name › Subscriptions. Free online tools ## Calculate in your browser, privately Every date is shown in the Gregorian and the Hijri calendar, and nothing you type leaves your browser. - [Period calculator](https://periodcalc.app/period-calculator/): Your next six periods, fertile days and ovulation, in Gregorian and Hijri dates. - [Ovulation calculator](https://periodcalc.app/ovulation-calculator/): Your fertile window and ovulation day for the next three cycles. - [Due date calculator](https://periodcalc.app/due-date-calculator/): Your due date, how many weeks pregnant you are and your trimester. - [Pregnancy week calculator](https://periodcalc.app/pregnancy-week-calculator/): How many weeks and days pregnant you are, your trimester and due date, from your last period or your due date. - [Conception date calculator](https://periodcalc.app/conception-date-calculator/): Count back from your due date to the days you most likely conceived: an estimate, not an exact day. - [Pregnancy test date calculator](https://periodcalc.app/pregnancy-test-date/): Shows the day your next period is due. The NHS says most tests can be done from the first day of a missed period. Questions ## Good to know ### Is my cycle data private? Yes. There is no account and no ads, and everything you record stays on your phone — we never receive it. You can lock the app with a PIN and Face ID or Touch ID. ### Is Period Calc free? Yes. Predictions, the calendar with Hijri dates, your fasting days, trying-to-conceive dates, the prayer & purity guide, reminders and the app lock are free. Premium is an optional subscription for planning ahead. ### Which Hijri calendar does it use? The Umm al-Qura calendar. If the month starts a day earlier or later where you live, you can adjust the Hijri date by one or two days in Settings. ### Can I use it to avoid pregnancy? No. Predictions are estimates based on averages, and cycles change from month to month. Period Calc is not a method of contraception. ### Is it available on Android? Not yet — Period Calc is for iPhone. The free calculators on this website work in any browser, on any phone. [See all questions](https://periodcalc.app/faq/) ## Plan your month around your cycle Your next period, your fertile days and your fasting days — with the Hijri date on every day, and your data on your phone. [Download on the App Store](https://apps.apple.com/app/id6814298894) Predictions are estimates, not medical advice or a diagnosis, and not a method of contraception. The prayer & purity guide gives the general rules of the four schools. It is not a fatwa — for your own case, ask someone whose knowledge you trust. This website uses no cookies and no analytics. The calculators run in your browser, and nothing you type is sent anywhere.