Best Due Date Calculator Apps

216+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

Looking for free due date calculator apps? 20 of our 216+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Due Date Calculator Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Pregnancy Baby Tracker - WTEPregnancy Baby Tracker - WTEFree4.9★ (376K)YesNoJul 2026
2Due Date Calculator: FertilityDue Date Calculator: FertilityFree4.6★ (13)NoNoMay 2026
3Obstetrics CalculatorObstetrics CalculatorFree5.0★ (1)YesYesJul 2026
4BabyCenter Pregnancy TrackerBabyCenter Pregnancy TrackerFree4.9★ (293K)YesNoJul 2026
5Pregnancy + | Tracker AppPregnancy + | Tracker AppFree4.8★ (75K)YesYesJul 2026
6OB Wheel Pregnancy TrackerOB Wheel Pregnancy TrackerFree4.5★ (11)NoNoJul 2026
7Pregnancy Tracker: Due DatePregnancy Tracker: Due DateFreeYesYesJul 2026
8OB WheelOB WheelFree4.3★ (7)NoYesJul 2026

Top Picks for Due Date Calculator

Pregnancy Baby Tracker - WTE#1

Pregnancy Baby Tracker - WTE by Everyday Health, Inc.

Track Development & Growth
Editor's Choice
🏥 Medical
4.9😊(376K ratings)
FreeAds
#25in Medical
Pregnancy Baby Tracker - WTE screenshot 1
Pregnancy Baby Tracker - WTE screenshot 2
Pregnancy Baby Tracker - WTE screenshot 3
Pregnancy Baby Tracker - WTE screenshot 4
Pregnancy Baby Tracker - WTE screenshot 5
Pregnancy Baby Tracker - WTE screenshot 6

This app guides you through pregnancy and early parenthood with weekly updates, development trackers, and expert advice. It helps you monitor your baby's growth, manage symptoms, and connect with other parents.

What We Love

  • 🚀 Helpful information and videos
  • 👍 Useful for tracking pregnancy and baby's development
  • 👍 Great community support
  • 👍 Easy to use and navigate

Room to Improve

  • 🐛 Freezing and lagging issues
  • 🔍 Inaccurate baby size comparisons
  • 💬 Toxic and unsupportive community
Due Date Calculator: Fertility#2

Due Date Calculator: Fertility by ViralMD

For Fertility Treatments
Strong Contender
🏥 Medical
4.6(13 ratings)
Free
Due Date Calculator: Fertility screenshot 1

This app calculates estimated due dates for pregnancy, particularly for those undergoing fertility treatments like embryo transfer or IUI. It can also determine due dates based on ovulation or natural conception.

Obstetrics Calculator#3

Obstetrics Calculator by Alexander Snegirev

Worth Considering
🏥 Medical
5.0(1 ratings)
FreeAdsIn-App Purchases
Obstetrics Calculator screenshot 1
Obstetrics Calculator screenshot 2
Obstetrics Calculator screenshot 3
Obstetrics Calculator screenshot 4
Obstetrics Calculator screenshot 5
Obstetrics Calculator screenshot 6

This medical app provides a comprehensive suite of tools for calculating gestational age, estimated due dates, and various risk assessments related to pregnancy and women's health. It includes calculators for maternity leave, cervical assessments, and cancer risk estimations, designed for healthcare professionals.

More Due Date Calculator apps to explore

4
BabyCenter Pregnancy Tracker
BabyCenter Pregnancy Tracker
BabyCenter Pregnancy Tracker
Track Baby Daily & Get Rewards
Free

This app helps you track your pregnancy week-by-week, monitor your baby's development, and access expert advice. It also offers a loyalty program for exclusive discounts and a community forum for support.

Week-by-week pregnancy tracking3-D fetal development videosLoyalty program for discounts
🏥 Medical
(293K)
free with in-app purchases
5
Pregnancy + | Tracker App
Pregnancy + | Tracker App
Pregnancy + | Tracker App
Pregnant? Join over 80m moms!
Free

Track your pregnancy week-by-week with expert advice, daily articles, and interactive 3D models of your baby's development. Features include a due date calculator, kick counter, and tools to plan for labor and organize appointments. Join millions of expecting parents worldwide.

Interactive 3D baby development modelsWeek-by-week pregnancy guidesDue date calculator
🏥 Medical
(75K)
free with in-app purchases
6
OB Wheel Pregnancy Tracker
OB Wheel Pregnancy Tracker
OB Wheel Pregnancy Tracker
Due Date Countdown OBGYN
Free

This app helps you estimate key pregnancy dates, including your due date, conception date, and last period. It offers tools to adjust predictions based on ultrasound findings or a known due date. Consult healthcare professionals for precise medical advice.

Last Period EstimatorUltrasound Date AdjustmentConception Date Calculator
🏥 Medical
(11)
free
7
Pregnancy Tracker: Due Date
Pregnancy Tracker: Due Date
Pregnancy Tracker: Due Date
Baby Growth Week by Week
Free
💪 Health & Fitness
(0)
8
OB Wheel
OB Wheel
OB Wheel
Due Date Calculator
Free

This app assists expectant mothers and healthcare professionals in tracking pregnancy with accurate due date calculations and weekly fetal development updates. It offers customizable features, health tips, and tools for clinicians to support patient care throughout the journey to delivery.

Accurate due date calculationWeekly fetal development trackerCustomizable reminders and tracking
🏥 Medical
(7)
free
9
The Bump: Baby & Pregnancy App
The Bump: Baby & Pregnancy App
The Bump: Baby & Pregnancy App
Baby Tracker, Growth & Names
Free

This app is a comprehensive pregnancy and baby tracker for expecting and new parents. It offers weekly updates on baby's growth with fun comparisons, a baby name finder, and daily advice from experts. It also includes helpful tools like a due date calculator, kick counter, and a food safety guide.

Weekly baby growth comparisonsBaby name finder3D interactive baby growth visualization
💪 Health & Fitness
(39K)
free with in-app purchases
10
Date Calculator, Days Calc
Date Calculator, Days Calc
Date Calculator, Days Calc
Time: Add, Between, Difference
Free

Easily solve date math problems with multiple calculation options. This intuitive app helps you find the difference between dates, add or subtract days, and calculate workdays. It's simple and user-friendly for all your date-related needs.

Days Between Two DatesAdd to/Subtract from a DateWorkdays Calculator
🔧 Utilities
(130)
free with in-app purchases
11
OB Wheel for Pregnancy
OB Wheel for Pregnancy
OB Wheel for Pregnancy
Due date trimester calculator
Free

This app helps expecting mothers and medical professionals calculate due dates, track pregnancy trimesters, and monitor baby's growth and nutritional needs. It offers a countdown to the due date and provides essential information for informed prenatal care.

Calculate due dateTrack trimestersDetermine measurements
🏥 Medical
(27)
free
12
Pregnancy Tracker・App by Moms
Pregnancy Tracker・App by Moms
Pregnancy Tracker・App by Moms
Week-by-Week Baby Growth Guide
Free

This app guides expecting parents through pregnancy with daily insights into baby's development and maternal health. It offers tools to track vital signs, schedule appointments, and access helpful articles, ensuring a well-documented and confident journey to childbirth.

Week-by-week baby development updatesDaily health and pregnancy insightsTrack weight, blood pressure, and contractions
🏥 Medical
(14K)
free with in-app purchases
13
Pregnancy Due Date, Calculator
Pregnancy Due Date, Calculator
Pregnancy Due Date, Calculator
Find out your due date
Free

This app helps you track your pregnancy, calculate your due date, and understand each stage. It provides week-by-week summaries of your baby's development and your body's changes, allowing you to log notes for later review or to share with your doctor.

Complete pregnancy calculatorWeek by week pregnancy updatesRecord pregnancy notes
💪 Health & Fitness
(52)
free with in-app purchases
14
OB Wheel Due Date Calculator
OB Wheel Due Date Calculator
OB Wheel Due Date Calculator
Due Date & Gestation Tracker
Free
💪 Health & Fitness
(0)
15
Belo: AI Pregnancy Tracker App
Belo: AI Pregnancy Tracker App
Belo: AI Pregnancy Tracker App
What to expect when pregnant
Free

This app serves as a personal pregnancy consultant, offering a personalized timeline, AI-powered Q&A, and weekly guidance. It includes tools to track baby's growth, monitor kicks and contractions, and manage pregnancy-related tasks.

Personalized pregnancy timelineAI assistant for pregnancy questionsWeekly guidance and expert tips
💪 Health & Fitness
(49)
free with in-app purchases
16
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Fertility, Ovulation, & Period
Free

Track your menstrual cycle, fertility, pregnancy, postpartum recovery, and menopause with personalized insights and expert articles. This app offers tools for ovulation prediction, baby growth tracking, and symptom management.

Period & Fertility calendarPregnancy tracker with baby growthPostpartum recovery modes
🏥 Medical
(89K)
free with in-app purchases
17
amma: Pregnancy & Baby Tracker
amma: Pregnancy & Baby Tracker
amma: Pregnancy & Baby Tracker
Fertility to Newborn Weekly
Free

Track your pregnancy week by week, from conception to your baby's newborn stage. Get daily updates on your baby's growth, changes in your body, and helpful tips. Features include contraction timing, kick counting, and a personal diary.

Weekly pregnancy calendarBaby development updatesMother's body changes
🏥 Medical
(10K)
free with in-app purchases
18
Hours + Minutes Calculator Pro
Hours + Minutes Calculator Pro
Hours + Minutes Calculator Pro
Minutes + Seconds Calculator
Free

Easily add or subtract time values including hours, minutes, and seconds. Calculate durations with days, weeks, months, and years. This tool simplifies time-based calculations for various needs.

Add/subtract hours, minutes, secondsCalculate with days, weeks, months, yearsSupports multiple time units
📊 Productivity
(165)
ad-supported
19
Loan Calculator‰
Loan Calculator‰
Loan Calculator‰
Simple Loan Calculator
Free

Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.

Loan calculationMortgage calculationAmount input
💰 Finance
(96K)
ad-supported
20
Avelisse Pregnancy Tracker
Avelisse Pregnancy Tracker
Avelisse Pregnancy Tracker
Pregnancy tracker, calendar
Free
💪 Health & Fitness
(0)

FAQ about Due Date Calculator

What are the best due date calculator apps for iPhone?
Pregnancy Baby Tracker - WTE tops our due date calculator apps ranking as of June 2026, with a 4.9-star average from 376K App Store ratings, and it's free to download.
Yes — 20 of the top due date calculator apps we rank are free to download, including Pregnancy Baby Tracker - WTE and Due Date Calculator: Fertility.
Pregnancy Baby Tracker - WTE shows ads and has no in-app purchases, according to its App Store listing as of June 2026.
We track 216+ due date calculator apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
This app serves as a comprehensive guide for pregnancy and early parenthood. It offers week-by-week insights into baby development, helps track symptoms and milestones, provides expert advice, and connects users with a community of parents.
Key features include a due date calculator, week-by-week pregnancy updates, baby growth tracking, daily personalized tips, symptom logging, a baby feeding and diaper tracker, and community forums for support.

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