AppsRicot

Nine

A calculator, not a tracker. Enter the first day of your last period and get an estimated due date, a week-by-week timeline, and the fertile window — without an account, a cycle log, or anything leaving your phone.

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What it does

• Due date from last period, conception date, IVF transfer (day-3 or day-5), or an ultrasound measurement.
• Current gestational age, trimester dates, and a week-by-week list to 40 weeks.
• A month calendar with the fertile window, predicted ovulation, and key dates marked.
• Ovulation mode: fertile window, predicted ovulation, and next expected period, from your cycle.

Every figure is an estimate based on standard formulas — not a diagnosis, and not a substitute for medical advice.

Nine Pro

The calendar view, ovulation mode, IVF and ultrasound methods, and multiple saved dates are part of Pro — a one-time purchase, yours for good. The core due-date calculator is free and stays free.

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