Best Conception Date Calculator Apps

249+ iOS apps curated and reviewed

4.7 avg rating
18 free apps
Updated August 2026

Looking for free conception date calculator apps? 18 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Conception Date Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Pregnancy Calculators ProPregnancy Calculators ProFreeYesNoMay 2026
2Due Date Calculator: FertilityDue Date Calculator: FertilityFree4.6★ (13)NoNoMay 2026
3Pregnancy Calculator & DiaryPregnancy Calculator & DiaryFree4.6★ (329)YesYesAug 2026
4Gestation Calculator - POG CalGestation Calculator - POG CalFreeNoNoMay 2026
5Premom-Ovulation Tracker, PCOSPremom-Ovulation Tracker, PCOSFree4.8★ (58K)NoYesAug 2026
6Ovia Cycle & Pregnancy TrackerOvia Cycle & Pregnancy TrackerFree4.8★ (90K)NoNoAug 2026
7Modern Fertility TrackerModern Fertility TrackerFree4.7★ (79)YesYesJul 2026
8EDD - EGA calculatorEDD - EGA calculatorFreeYesNoJul 2026

Top Picks for Conception Date Calculator

Pregnancy Calculators Pro#1

Pregnancy Calculators Pro by Putu Angga Risky Raharja

Maternity and Motherhood
Editor's Choice
💪 Health & Fitness
0.0(0 ratings)
FreeAds
Pregnancy Calculators Pro screenshot 1
Pregnancy Calculators Pro screenshot 2
Pregnancy Calculators Pro screenshot 3
Pregnancy Calculators Pro screenshot 4
Pregnancy Calculators Pro screenshot 5
Pregnancy Calculators Pro screenshot 6

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.

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.

Pregnancy Calculator & Diary#3

Pregnancy Calculator & Diary by Reticode

Baby Calendar, Dates, Due Date
Worth Considering
💪 Health & Fitness
4.6(329 ratings)
FreeAdsIn-App Purchases
Pregnancy Calculator & Diary screenshot 1
Pregnancy Calculator & Diary screenshot 2
Pregnancy Calculator & Diary screenshot 3
Pregnancy Calculator & Diary screenshot 4
Pregnancy Calculator & Diary screenshot 5

Easily estimate your baby's due date and conception date. Track your pregnancy week-by-week with insights and record important details in a personal diary. Access helpful articles and tips tailored to each stage.

More Conception Date Calculator apps to explore

4
Gestation Calculator - POG Cal
Gestation Calculator - POG Cal
Gestation Calculator - POG Cal
Period of Gestation Calculator
Free
📚 Education
(0)
5
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Fertility, Period & Pregnancy
Free

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility to increase chances of conception. It offers personalized insights, expert guidance, and tools like BBT charting and ovulation test scanning. Users can also track pregnancy progress and connect with a supportive community.

Ovulation test scanning and LH level quantificationAutomatic BBT thermometer syncing and chartingPeriod and cycle logging with symptom tracking
💪 Health & Fitness
(58K)
free with in-app purchases
6
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
7
Modern Fertility Tracker
Modern Fertility Tracker
Modern Fertility Tracker
Premom fertility tracker date
Free

Easily track your menstrual cycle, predict your next period, and identify your fertile window. Log symptoms, moods, and receive discreet reminders for ovulation and more. Gain insights into your reproductive health with daily articles and tips.

Period trackingFertility window predictionOvulation day identification
💪 Health & Fitness
(79)
free with in-app purchases
8
EDD - EGA calculator
EDD - EGA calculator
EDD - EGA calculator
Simple, Fast, Straightforward
Free

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.

Calculate EDD using LMPCalculate EDD using USSCalculate EGA
🏥 Medical
(0)
ad-supported
9
Ovulation & Period Calculator
Ovulation & Period Calculator
Ovulation & Period Calculator
Pregnancy and Period Tracker
Free
💪 Health & Fitness
(0)
10
Ovulation: Period Calculator
Ovulation: Period Calculator
Ovulation: Period Calculator
Fertility & Pregnancy Calendar
Free
💪 Health & Fitness
(0)
11
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
(294K)
free with in-app purchases
12
Day Calculator
Day Calculator
Day Calculator
by Alejandro Barrientos
Free
🔧 Utilities
(0)
13
DateDiff Calculator
DateDiff Calculator
DateDiff Calculator
Calculate time between dates
$0.99
🔧 Utilities
(0)
14
Dr. Campos Ros Pregnancy Wheel
Dr. Campos Ros Pregnancy Wheel
Dr. Campos Ros Pregnancy Wheel
OB gestational age calculator
Free
🏥 Medical
(0)
15
Pregnancy Calculator + Tools
Pregnancy Calculator + Tools
Pregnancy Calculator + Tools
by OBAID JAZAA
Free
🏥 Medical
(0)
16
Pregnancy Calc
Pregnancy Calc
Pregnancy Calc
by Petr Mrazek
Free
💪 Health & Fitness
(0)
17
DrObsCalc
DrObsCalc
DrObsCalc
Intelligent GA & EDD Workflow
Free
🏥 Medical
(0)
18
Pregnancy DD Calculator
Pregnancy DD Calculator
Pregnancy DD Calculator
by ManalSoft
$4.99
💪 Health & Fitness
(0)
19
Dextograma
Dextograma
Dextograma
by Victor Oviedo
Free
🏥 Medical
(0)
20
Bump Planner
Bump Planner
Bump Planner
Track Cycles, Plan Events
Free
💪 Health & Fitness
(0)

FAQ about Conception Date Calculator

Are there free conception date calculator apps for iPhone?
Yes — 18 of the top conception date calculator apps we rank are free to download, including Pregnancy Calculators Pro and Due Date Calculator: Fertility.
Pregnancy Calculators Pro shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ conception date calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Pregnancy Calculators Pro calculates the estimated date of delivery (EDD) or due date based on your last menstrual period (LMP). It can also use ultrasonography (USG) biometrics like crown-rump length (CRL), biparietal diameter (BPD), and femur length (FL) for more precise calculations.
The app uses commonly used formulas for precise pregnancy parameter calculations. For fetal weight estimation, it utilizes the Hadlock or Shepard formulas.