Best Fast Pregnancy Calculator Apps

212+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated May 2026

FAST Pregnancy Calculator is the household name in fast pregnancy calculator, but it's far from the only option. We track 212+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Fast Pregnancy Calculator

FAST Pregnancy Calculator#1

FAST Pregnancy Calculator by Onur Ince

For Healthcare Professionals
Editor's Choice
🏥 Medical
4.0(4 ratings)
Free
FAST Pregnancy Calculator screenshot 1
FAST Pregnancy Calculator screenshot 2
FAST Pregnancy Calculator screenshot 3
FAST Pregnancy Calculator screenshot 4
FAST Pregnancy Calculator screenshot 5

This medical app helps healthcare professionals quickly calculate pregnancy gestation weeks using last menstrual period dates or ultrasound scan data. It provides pregnancy progress information and is designed for busy medical staff.

Pregnancy + | Tracker App#2

Pregnancy + | Tracker App by Philips Digital UK Limited

Pregnant? Join over 80m moms!
Strong Contender
🏥 Medical
4.8😊(74K ratings)
FreeAdsIn-App Purchases
#5in Medical
Pregnancy + | Tracker App screenshot 1
Pregnancy + | Tracker App screenshot 2
Pregnancy + | Tracker App screenshot 3
Pregnancy + | Tracker App screenshot 4
Pregnancy + | Tracker App screenshot 5
Pregnancy + | Tracker App screenshot 6

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.

What We Love

  • 🚀 Excellent pregnancy tracking app
  • 👍 Informative and useful features
  • 💡 Realistic 3D baby visuals
  • 👍 Helpful weekly updates and articles

Room to Improve

  • 🐛 Inaccurate due date and week calculations
  • 🐛 Bugs with loading articles and content
  • 💰 Paywall after 14 weeks
WeMoms - Pregnancy & Baby App#3

WeMoms - Pregnancy & Baby App by Globalia

Suivi: Grossesse, Alimentation
Worth Considering
🏥 Medical
4.8😐(26K ratings)
FreeAdsIn-App Purchases
#9in Medical
WeMoms - Pregnancy & Baby App screenshot 1
WeMoms - Pregnancy & Baby App screenshot 2
WeMoms - Pregnancy & Baby App screenshot 3
WeMoms - Pregnancy & Baby App screenshot 4
WeMoms - Pregnancy & Baby App screenshot 5
WeMoms - Pregnancy & Baby App screenshot 6

Track your pregnancy and baby's development week by week with expert content and personalized articles. Connect with a supportive community of mothers and utilize helpful tools for every stage of your journey to motherhood.

What We Love

  • 🤗 Helpful community
  • 🤰 Informative for pregnancy journey
  • 💕 Supportive for new moms
  • 🎉 Engaging features

Room to Improve

  • 🤬 Bullying and harassment issues
  • 💰 Expensive subscription
  • 📺 Excessive ads

More Fast Pregnancy Calculator apps to explore

4
Pregnancy Baby Tracker - WTE
Pregnancy Baby Tracker - WTE
Pregnancy Baby Tracker - WTE
Track Development & Growth
Free

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.

Week-by-week pregnancy trackerDue date calculatorBaby development and growth tracking
🏥 Medical
(376K)
free with in-app purchases
5
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

Large buttonsClear displayFast calculations
🔧 Utilities
(404K)
ad-supported
6
Gestational Age (baby's age)
Gestational Age (baby's age)
Gestational Age (baby's age)
Calculator & Prenatal Care
Free

This app helps healthcare professionals quickly calculate gestational age, estimate due dates, and track prenatal care. It offers tools for monitoring pregnancy progress, including clinical charts, fetal weight estimation, and patient history organization.

Gestational age calculation (LMP & Ultrasound)Estimated Due Date (EDD) calculationPrenatal care tracking
🏥 Medical
(184)
free with in-app purchases
7
Gestational Age (by Medfolio)
Gestational Age (by Medfolio)
Gestational Age (by Medfolio)
Fast and Intuitive Calculation
Free

This medical app calculates gestational age based on information from leading health organizations. It provides pregnancy development insights but is not a substitute for professional medical advice or diagnosis.

Gestational age calculationBased on ACOG guidelinesInformation from U.S. health departments
🏥 Medical
(2)
free
8
Perfect OB Wheel
Perfect OB Wheel
Perfect OB Wheel
Obstetrics calculator
$1.99

This app is a comprehensive obstetrics calculator that provides detailed pregnancy information. It offers flexible input options and displays thorough results including estimated due dates, gestational ages, and fetal growth estimates.

Flexible input (LMP, conception, EDC, ultrasound)Fast data entry optionsDetailed pregnancy results
🏥 Medical
(3.4K)
free with in-app purchases
9
Pregnancy App.
Pregnancy App.
Pregnancy App.
Start tracking your pregnancy!
Free

Track your pregnancy week by week with this comprehensive app. It offers tools to monitor your progress, calculate your due date, and manage key pregnancy milestones like contractions and kicks. Stay informed and organized throughout your journey.

Track pregnancy week by weekPregnancy calendar and week informationCalculate due date
🏥 Medical
(22K)
ad-supported
10
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
11
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
12
Health calculator: weight, BMI
Health calculator: weight, BMI
Health calculator: weight, BMI
Weight gain / loss, pregnancy
Free

This app helps you manage your health by calculating key metrics like BMI, daily calorie needs, and target heart rate zones. It also assists with pregnancy planning and hydration goals based on your personal data.

BMI calculationDaily calorie requirementsTarget heart rate zones
💪 Health & Fitness
(47)
ad-supported
13
ClevCalc - Calculator
ClevCalc - Calculator
ClevCalc - Calculator
All-In-One Calculator
Free

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

Scientific calculatorUnit converterCurrency converter
📊 Productivity
(12K)
free with in-app purchases
14
Color Calculator-smart&cute
Color Calculator-smart&cute
Color Calculator-smart&cute
Cute calculator app with theme
Free

This app offers a customizable and fast calculator experience with a wide variety of themes. It includes scientific and standard modes, real-time results, and calculation history. Personalize your math with over 60 cute and colorful themes, including animated options.

60+ free cute and colorful themesExclusive dynamic and special themesScientific & Standard calculator modes
🔧 Utilities
(15K)
freemium
15
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition
📚 Education
(6.2K)
free with in-app purchases
16
Femia - Fertility & Pregnancy
Femia - Fertility & Pregnancy
Femia - Fertility & Pregnancy
Track Period & Ovulation Cycle
Free

This app supports women on their journey to motherhood, offering personalized guidance to optimize fertility and track pregnancy. It provides insights into baby development with 3D models and offers 24/7 access to expert health advice and personalized reports.

Fertility optimization plansPersonalized pregnancy advice3D baby development tracking
💪 Health & Fitness
(5.5K)
freemium
17
Pregnancy Tracker 3D by Sprout
Pregnancy Tracker 3D by Sprout
Pregnancy Tracker 3D by Sprout
Track Baby Growth Week-By-Week
Free

This app guides you through pregnancy with week-by-week tracking of your baby's growth. It offers personalized insights, symptom monitoring, and tools like a kick counter and contraction timer. Create a birth plan and a pregnancy journal to capture memories.

Week-by-week baby growth trackingInteractive 3D baby modelsDue date calculator
🏥 Medical
(24K)
free with in-app purchases
18
Shohay Pregnancy
Shohay Pregnancy
Shohay Pregnancy
Evidence-based pregnancy app
Free

This app offers evidence-based, doctor-reviewed guidance for expecting parents, covering week-by-week pregnancy and fetal development. It includes tools for tracking progress, managing symptoms, and maintaining a healthy lifestyle, with specific advice for fathers.

Week-by-week pregnancy guidesFetal development trackingSymptom management tools
💪 Health & Fitness
(1.2K)
free with in-app purchases
19
Panecal Scientific Calculator
Panecal Scientific Calculator
Panecal Scientific Calculator
For engineers and students
Free

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

Formula editing with cursor and swipeReuse past formulasVariable memory for calculations
🔧 Utilities
(1.9K)
ad-supported
20
Calculator Pro Lite
Calculator Pro Lite
Calculator Pro Lite
Best Calculator
Free

A highly customizable calculator app offering a modern interface and extensive features. Personalize themes, button layouts, and visual elements. Track your calculations with a detailed history and access scientific functions.

Customizable themes and colorsDual-line displayCalculation history
🔧 Utilities
(3K)
ad-supported