Pregnancy guides

Week trackingFree tool

How many weeks pregnant am I?

How pregnancy weeks are counted, why week 1 starts before conception, and how to find your exact week and day from your last period, conception date, or due date.

Open the tool → Due dateFree tool

Due date calculator: three ways to find your due date

Calculate your due date from your last menstrual period, conception date, or ultrasound estimate. How the 40-week rule works and how to count down the days.

Open the tool → Baby growth

Baby size by week: from poppy seed to watermelon

How big is your baby this week? Week-by-week baby size comparisons — poppy seed at week 4, banana at week 20, watermelon at week 40 — with typical length and weight.

Read the guide → TrimestersFree tool

Pregnancy trimesters explained: which weeks are in each?

First trimester weeks 1-13, second 14-27, third 28 to birth. A full week-by-week table, why sources disagree about week 13, and a calculator for your own trimester.

Open the tool → LaborFree tool

How to time contractions (the right way)

How to time, count and measure contractions: duration versus frequency, a worked example log, what each stage of labor looks like, and a free timer that does the math.

Open the tool → LaborFree tool

The 5-1-1 rule: when to go to the hospital

Contractions 5 minutes apart, lasting 1 minute, for 1 hour. A free checker that watches the pattern for you, how 4-1-1 and 3-1-1 differ, and what to say when you call.

Open the checker → Labor

Breathing exercises for labor: staying calm through contractions

Simple breathing exercises for labor: how paced 4-4 breathing works, why slow breathing helps during contractions, and how to practice with a guided app before the big day.

Read the guide → iPhone

Pregnancy widgets for iPhone: your week on the lock screen

Put your pregnancy week, baby size, and due date countdown on your iPhone home screen and lock screen. How pregnancy widgets work and how to set them up in minutes.

Read the guide → Pricing

Pregnancy apps without a subscription: what to look for

Tired of pregnancy apps demanding monthly subscriptions? What subscription apps really cost over nine months, and what a one-time purchase pregnancy tracker offers instead.

Read the guide → Privacy

Private pregnancy tracker: keeping your data on your phone

Most pregnancy apps share sensitive data with third parties. How to choose a private pregnancy tracker: local-only storage, no account, no analytics, no ads.

Read the guide →