Best Due Date Calculator Fertility Apps

243+ iOS apps curated and reviewed

3.9 avg rating
19 free apps
Updated August 2026

The best due date calculator fertility apps on iPhone average 3.9★ across 243+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Due Date Calculator Fertility Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Due Date Calculator: FertilityDue Date Calculator: FertilityFree4.6★ (13)NoNoMay 2026
2EDD - EGA calculatorEDD - EGA calculatorFreeYesNoJul 2026
3IVF Pregnancy CalculatorIVF Pregnancy CalculatorFree5.0★ (5)NoNoJul 2026
4Ovulation & Fertility TrackerOvulation & Fertility TrackerFree4.5★ (2.7K)NoYesAug 2026
5Ovia Cycle & Pregnancy TrackerOvia Cycle & Pregnancy TrackerFree4.8★ (90K)NoNoAug 2026
6Obstetrics CalculatorObstetrics CalculatorFree5.0★ (1)YesYesAug 2026
7Period & Ovulation CalculatorPeriod & Ovulation CalculatorFree4.4★ (611)YesYesAug 2026
8Pregnancy Calculators ProPregnancy Calculators ProFreeYesNoMay 2026

Top Picks for Due Date Calculator Fertility

Due Date Calculator: Fertility#1

Due Date Calculator: Fertility by ViralMD

For Fertility Treatments
Editor's Choice
🏥 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.

EDD - EGA calculator#2

EDD - EGA calculator by Kunlepaints Ltd

Simple, Fast, Straightforward
Strong Contender
🏥 Medical
0.0(0 ratings)
FreeAds
EDD - EGA calculator screenshot 1
EDD - EGA calculator screenshot 2
EDD - EGA calculator screenshot 3

This medical app helps calculate Estimated Due Date (EDD) and Estimated Gestational Age (EGA). It offers two methods for calculation: using the Last Menstrual Period (LMP) or a provided EDD from Ultrasound (USS). The interface is designed for simplicity and speed.

IVF Pregnancy Calculator#3

IVF Pregnancy Calculator by Tsong Law Group

Tracks surrogacy pregnancies
Worth Considering
🏥 Medical
5.0(5 ratings)
Free
IVF Pregnancy Calculator screenshot 1
IVF Pregnancy Calculator screenshot 2
IVF Pregnancy Calculator screenshot 3
IVF Pregnancy Calculator screenshot 4
IVF Pregnancy Calculator screenshot 5
IVF Pregnancy Calculator screenshot 6

This app helps track IVF pregnancies by calculating gestational age and estimated due dates based on embryo transfer dates. It supports multiple pregnancies, allows saving results, and integrates with your calendar. It also provides fun comparisons of fetal size to fruits.

More Due Date Calculator Fertility apps to explore

4
Ovulation & Fertility Tracker
Ovulation & Fertility Tracker
Ovulation & Fertility Tracker
Track Menstrual Period & Cycle
Free

This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows to increase chances of conception. It offers a user-friendly interface to input cycle details and provides reminders for periods and ovulation.

Ovulation calendarFertility predictionPeriod and ovulation reminders
💪 Health & Fitness
(2.7K)
subscription
5
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
(90K)
free with in-app purchases
6
Obstetrics Calculator
Obstetrics Calculator
Obstetrics Calculator
by Alexander Snegirev
Free

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.

Gestational age and due date calculationMultiple calculation methods (LMP, ultrasound, IVF)Maternity leave timeframe estimation
🏥 Medical
(1)
free with in-app purchases
7
Period & Ovulation Calculator
Period & Ovulation Calculator
Period & Ovulation Calculator
Fertility Tracker & Calendar
Free

This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows. It also assists in calculating pregnancy test dates and expected labor dates, offering a comprehensive tool for family planning and fertility awareness.

Track period datesPredict ovulation datesIdentify fertile days
💪 Health & Fitness
(611)
free with in-app purchases
8
Pregnancy Calculators Pro
Pregnancy Calculators Pro
Pregnancy Calculators Pro
Maternity and Motherhood
Free

This app helps healthcare practitioners and pregnant women track pregnancy progress. It calculates gestational age, estimated due dates, and fetal weight using various formulas. It also offers helpful tips and recommendations for diet, exercise, and antenatal care.

Gestational age calculationEstimated due date (EDD) calculatorFetal weight estimation
💪 Health & Fitness
(0)
ad-supported
9
Ovulation: Period Calculator
Ovulation: Period Calculator
Ovulation: Period Calculator
Fertility & Pregnancy Calendar
Free
💪 Health & Fitness
(0)
10
Date Calendar Calculator
Date Calendar Calculator
Date Calendar Calculator
Calculate Calendar Date & Time
Free

This app helps you calculate date and time durations, add or subtract time from dates, and determine working days. It also converts between calendars and time zones, and estimates ovulation and pregnancy due dates. The design is simple and intuitive.

Calculate date and time durationsAdd/subtract time from datesCalculate working days
🔧 Utilities
(29)
free with in-app purchases
11
Ovulation Calculator Fertile Tracker & Calendar OC
Ovulation Calculator Fertile Tracker & Calendar OC
Ovulation Calculator Fertile Tracker & Calendar OC
by Ovulation Calculator Pty Ltd
Free

This app helps users identify their most fertile days to increase the chances of conception. It analyzes personal cycle data, offers fertility knowledge, and provides access to a supportive community.

Cycle Data Analysis PredictionsOvulation CalculatorFertile Window Viewer
🏥 Medical
(5.9K)
free
12
ReUnite Fertility App
ReUnite Fertility App
ReUnite Fertility App
by ReUnite RX LLC
Free

This app helps organize fertility medication information and treatment schedules. It provides access to educational resources, discount program applications, and injection tutorials. A due date calculator is also included to assist users on their fertility journey.

Fertility medication information organizerTreatment schedule and calendarFertility medication discount program applications
🏥 Medical
(3)
free
13
Pregnancy Due Date
Pregnancy Due Date
Pregnancy Due Date
by Malay Patel
Free

Estimate key pregnancy dates, including conception, due date, and trimester milestones. Input your last menstrual period to receive personalized date calculations for various pregnancy stages.

Estimate conception datesCalculate highest fetal risk datesDetermine organ forming dates
💪 Health & Fitness
(5)
free with in-app purchases
14
Due Date Dashboard
Due Date Dashboard
Due Date Dashboard
by Alin Nomura
Free

Track pregnancy progress with detailed countdowns. View remaining time in various units like weeks, days, or even hours. Personalize your experience by adding your baby's name.

Pregnancy progress trackingCountdown in multiple unitsAdd baby's name
💪 Health & Fitness
(2)
free
15
Pregnancy Due Date Quickly Calculator - Pregnant,Baby Tracker,Countdown Birth Calendar
Pregnancy Due Date Quickly Calculator - Pregnant,Baby Tracker,Countdown Birth Calendar
Pregnancy Due Date Quickly Calculator - Pregnant,Baby Tracker,Countdown Birth Calendar
by TIEN TA LEE
Free

Calculate your baby's estimated due date based on your last menstrual period. This app provides a countdown to your baby's birth, helping you track your pregnancy.

Calculate due dateCountdown to birthTrack pregnancy
🏥 Medical
(3)
free
16
Pregnancy Due Date, Calculator
Pregnancy Due Date, Calculator
Pregnancy Due Date, Calculator
Conception Date & Calendar
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
(55)
free with in-app purchases
17
Animal Pregnancy Calculator
Animal Pregnancy Calculator
Animal Pregnancy Calculator
Gestation Calculator for Pets
Free

Easily calculate your pet's pregnancy due date. This app provides accurate and instant results for various animals, helping you manage their gestation period without manual calculations.

Calculate pet pregnancy due datesSupports goats, cattle, mares, swine, sheep, dogs, and catsAccurate and instant results
🔧 Utilities
(5)
free
18
Pregnancy DD Calculator
Pregnancy DD Calculator
Pregnancy DD Calculator
by ManalSoft
$4.99
💪 Health & Fitness
(0)
19
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
(26)
free
20
Gestation Calculator - POG Cal
Gestation Calculator - POG Cal
Gestation Calculator - POG Cal
Period of Gestation Calculator
Free
📚 Education
(0)

FAQ about Due Date Calculator Fertility

What are the best due date calculator fertility apps for iPhone?
Due Date Calculator: Fertility tops our due date calculator fertility apps ranking as of August 2026, with a 4.6-star average from 13 App Store ratings, and it's free to download.
Yes — 19 of the top due date calculator fertility apps we rank are free to download, including Due Date Calculator: Fertility and EDD - EGA calculator.
Due Date Calculator: Fertility has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 243+ due date calculator fertility apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The Due Date Calculator app is primarily used to calculate estimated pregnancy due dates, especially for individuals who have undergone fertility treatments such as embryo transfer, IUI, or egg retrieval. It can also calculate due dates based on ovulation or natural conception.
Pregnancy due dates are estimations, and most women deliver within a two-week window before or after their anticipated due date. The app provides the most accurate estimation possible based on the data entered.