Best Obscalc Apps

74+ iOS apps curated and reviewed

4.4 avg rating
17 free apps
Updated June 2026

Out of 74+ obscalc apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Obscalc

OB Calc (cloud)#2

OB Calc (cloud) by Glen Botha

By a doctor, for doctors
Strong Contender
🏥 Medical
5.0(5 ratings)
FreeIn-App Purchases
OB Calc (cloud) screenshot 1
OB Calc (cloud) screenshot 2
OB Calc (cloud) screenshot 3
OB Calc (cloud) screenshot 4
OB Calc (cloud) screenshot 5
OB Calc (cloud) screenshot 6

This application helps obstetricians efficiently calculate important test date windows for patients using various methods, including LMP, EDC, sonogram, and IVF. Try it for free for 7 days and access premium features with a low monthly subscription, allowing you to save patient data and sync across devices.

OB Wheels#3

OB Wheels by Joshua D. steinberg

Worth Considering
🏥 Medical
2.3(15 ratings)
Free
OB Wheels screenshot 1
OB Wheels screenshot 2
OB Wheels screenshot 3
OB Wheels screenshot 4
OB Wheels screenshot 5

This application combines a calendar calculator, an interactive OB wheel, and a reference guide for reconciling due dates from LMP and sonograms, providing clinicians with a comprehensive tool for deriving essential dates in pregnancy care. Download the app to accurately determine EDD, gestational age, and reconcile due dates with ease.

More Obscalc apps to explore

4
WUSM OB Calc
WUSM OB Calc
WUSM OB Calc
by Washington University in St. Louis
Free
🏥 Medical
(1)
5
Gestational Age (baby's age)
Gestational Age (baby's age)
Gestational Age (baby's age)
Calculator & Prenatal Care
Free

This application provides a quick and easy way to calculate gestational age and offers valuable information such as estimated delivery dates and fetal weight. It features a practical BMI calculator and allows users to track pregnancy progress, making it an essential tool for healthcare professionals and pregnant women.

🏥 Medical
(181)
6
OB Calc Oficial
OB Calc Oficial
OB Calc Oficial
by Fernando Luiz Cunha Castelo Branco
$4.99

Este aplicativo oferece uma variedade de calculadoras médicas para profissionais de saúde, incluindo cálculos de idade gestacional, IMC, data provável do parto e muito mais. Baixe agora e tenha uma ferramenta prática e completa para auxiliar no seu dia a dia!

🏥 Medical
(0)
7
Perfect OB Wheel
Perfect OB Wheel
Perfect OB Wheel
Obstetrics calculator
$1.99

A comprehensive obstetrics calculator app offering flexible input options, speed, thorough results, accuracy, and data persistence. Upgrade to Perfect OB Tracker for enhanced pregnancy tracking features and HIPAA compliance.

🏥 Medical
(3.4K)
8
Pregnancy Gestogram
Pregnancy Gestogram
Pregnancy Gestogram
by Isis Producciones y Cia. Ltda.
Free

This application helps expectant mothers track their pregnancy progress and access essential information about their baby's development and their own body changes. By simply inputting their last menstrual period, users can get detailed insights into fetal growth, estimated birth date, weight gain, and more, with weekly updates and multimedia resources.

💪 Health & Fitness
(6)
9
OB Tracker & Pregnancy Wheel
OB Tracker & Pregnancy Wheel
OB Tracker & Pregnancy Wheel
Shared Patient Tracking
Free

This application helps healthcare professionals track pregnancies and postpartum care by allowing them to monitor patient details, important dates, and customizable metrics. It also enables secure syncing and sharing of patient information across devices and with colleagues, with options for a free trial and subscription-based access.

🏥 Medical
(45)
10
FAST Pregnancy Calculator
FAST Pregnancy Calculator
FAST Pregnancy Calculator
For Healthcare Professionals
Free

This application helps healthcare professionals calculate a patient's gestation week based on their last menstruation period or previous ultrasound scans, providing a convenient solution for busy medical staff. By determining the gestation week, users can access information on the progress of the pregnancy, making it a helpful tool for physicians, midwives, nurses, and medical secretaries.

🏥 Medical
(4)
11
OB Wheel
OB Wheel
OB Wheel
Due Date Calculator
Free

This pregnancy journey companion app helps expectant mothers and healthcare professionals track pregnancy milestones with accuracy and ease, offering features such as due date calculation, fetal development tracking, and health tips. Download now and start your journey to motherhood with confidence and joy!

🏥 Medical
(7)
12
Gestational Age (by Medfolio)
Gestational Age (by Medfolio)
Gestational Age (by Medfolio)
Fast and Intuitive Calculation
Free

Easily calculate gestational age with a fast and intuitive mobile tool based on reputable medical guidelines. This app provides quick estimations, but always consult your healthcare provider for definitive medical advice.

🏥 Medical
(2)
13
My Pregnancy Calendar
My Pregnancy Calendar
My Pregnancy Calendar
by Sonya Marcarelli
Free

This pregnancy tracking application helps you monitor your pregnancy journey with a calendar, logger, and due date calculator, providing essential information and features such as daily notes and weight tracking. Download the app to stay on top of your pregnancy milestones and get personalized insights.

💪 Health & Fitness
(202)
14
OB Wheel+
OB Wheel+
OB Wheel+
Pregnancy calculator for HCPs
Free
🏥 Medical
(1)
15
Obstetric Calculator Plus
Obstetric Calculator Plus
Obstetric Calculator Plus
by Mehdi Taghavi
Free

This application helps healthcare professionals calculate gestational age and estimated delivery dates for pregnant mothers using the last menstrual period and ultrasound data. It also provides BMI calculation to support comprehensive care.

🏥 Medical
(6)
16
Prego OB Wheel
Prego OB Wheel
Prego OB Wheel
Obstetrics calculator
$4.99

An obstetrics calculator application designed for quick and accurate pregnancy date calculations and patient tracking. Easily calculate pregnancy dates, determine gestational age, track patients, and save patient data with quick notes. Access saved patient information on one simple screen. Enjoy using the app and leave a review for others to discover its benefits.

🏥 Medical
(319)
17
Due Date Calculator: Fertility
Due Date Calculator: Fertility
Due Date Calculator: Fertility
For Fertility Treatments
Free

This fertility-specific pregnancy due date calculator helps determine the due date for women who have undergone fertility treatments, such as embryo transfer, IUI, and egg retrieval, as well as those who conceived naturally. Simply select the calculation method, enter the relevant date, and get an estimated due date, gestational age, and likely conception date.

🏥 Medical
(13)
18
Obstetrum: OB-GYN Calculator
Obstetrum: OB-GYN Calculator
Obstetrum: OB-GYN Calculator
Gestational Age & Fetal Weight
Free
🏥 Medical
(0)
19
Pregnancy Calculators Pro
Pregnancy Calculators Pro
Pregnancy Calculators Pro
Maternity and Motherhood
Free
💪 Health & Fitness
(0)
20
OB Wheel Pregnancy Tracker
OB Wheel Pregnancy Tracker
OB Wheel Pregnancy Tracker
Due Date Countdown OBGYN
Free

This pregnancy tracker helps expecting mothers forecast key dates and milestones, offering various calculators to estimate due dates based on last period, ultrasound, or conception date. Download and start tracking your pregnancy journey, but be sure to consult healthcare professionals for precise insights.

🏥 Medical
(11)