Best Obscalc Apps

23+ iOS apps curated and reviewed

4.3 avg rating
16 free apps
Updated August 2026

Out of 23+ obscalc apps on iOS, 16 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Obscalc Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Obstetrics CalculatorObstetrics CalculatorFree5.0★ (1)YesYesAug 2026
2OB Calc (cloud)OB Calc (cloud)Free5.0★ (5)NoYesJul 2026
3OB WheelsOB WheelsFree2.3★ (15)NoNoAug 2026
4Gestational Age (baby's age)Gestational Age (baby's age)Free4.9★ (193)YesYesAug 2026
5EDD - EGA calculatorEDD - EGA calculatorFreeYesNoJul 2026
6WUSM OB CalcWUSM OB CalcFree5.0★ (1)NoNoMay 2026
7Mobilscan OBDMobilscan OBDFree1.5★ (2)NoNoMay 2026
8OB Wheel Pregnancy TrackerOB Wheel Pregnancy TrackerFree4.6★ (26)NoNoAug 2026

Top Picks for Obscalc

Obstetrics Calculator#1

Obstetrics Calculator by Alexander Snegirev

Editor's Choice
🏥 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.

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 medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

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 app calculates due dates, gestational age, and reconciles sonogram and LMP dates using a digital OB wheel and calendar. It offers a familiar interactive wheel for precise date calculations, accounting for leap years.

More Obscalc apps to explore

4
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
(193)
free with in-app purchases
5
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
6
WUSM OB Calc
WUSM OB Calc
WUSM OB Calc
by Washington University in St. Louis
Free

This medical tool provides instant clinical support for OBGYNs and other healthcare professionals. It offers calculations and management guidance for common areas like VBAC success rates, Down syndrome risk, and intrauterine growth restriction. Data is evidence-based, drawn from literature and expert opinion.

VBAC success rate determinationDown syndrome risk assessmentPregnancy of unknown location management
🏥 Medical
(1)
free
7
Mobilscan OBD
Mobilscan OBD
Mobilscan OBD
by Mobilscan
Free

This app connects to your vehicle's OBD system via a WiFi adapter to display sensor data and diagnostic trouble codes. It includes a simulator for testing functionality without a physical connection.

Retrieves sensor valuesDisplays fault codesOBD WiFi adapter communication
🔧 Utilities
(2)
free
8
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
9
SonoBuddy-Ultrasound Reference
SonoBuddy-Ultrasound Reference
SonoBuddy-Ultrasound Reference
Sonographer Protocols & Calc
Free
$9.99 | 100% OFF

Provides quick access to essential ultrasound measurements, scanning protocols, and built-in calculators for sonographers and students. Helps identify pathology red flags to support clinical decisions on the go.

Normal values referenceExam protocolsBuilt-in calculators
📚 Education
(2)
free
10
Prego OB Wheel
Prego OB Wheel
Prego OB Wheel
Obstetrics calculator
$4.99

This app is a simple obstetrical calculator and patient tracker. It helps healthcare professionals quickly determine pregnancy dates, gestational age, and track patient progress. Save patient information and notes for easy reference.

Calculate pregnancy dates (LMP, ultrasound, conception, EDD)Determine gestational ageTrack pregnancies
🏥 Medical
(323)
free
11
OB Tracker & Pregnancy Wheel
OB Tracker & Pregnancy Wheel
OB Tracker & Pregnancy Wheel
Shared Patient Tracking
Free

This medical app helps track pregnancies and postpartum patients with detailed metrics and important dates. It allows secure sharing of patient information with colleagues via iCloud. A free version offers limited tracking, with subscriptions available for unlimited access.

Pregnancy and postpartum patient trackingCustomizable patient metrics and datesiCloud syncing for cross-device access
🏥 Medical
(47)
free with in-app purchases
12
OBD Compass
OBD Compass
OBD Compass
Smart Scanner In Your Pocket
Free
🔧 Utilities
(0)
13
OB Calc Oficial
OB Calc Oficial
OB Calc Oficial
by Fernando Luiz Cunha Castelo Branco
$4.99

This medical app provides essential calculators and tables for obstetricians and healthcare professionals. It helps with calculating body surface area, estimated due dates, Glasgow Coma Scale, gestational age, and fetal measurements. It also includes CID-10 codes and various obstetric reference tables.

Gestational age calculationEstimated Due Date calculatorBody Surface Area calculator
🏥 Medical
(7)
paid
14
Obstetrum: OB-GYN Calculator
Obstetrum: OB-GYN Calculator
Obstetrum: OB-GYN Calculator
Gestational Age & Fetal Weight
Free
🏥 Medical
(0)
15
Control OBS
Control OBS
Control OBS
Feature rich OBS Controller
Free

This app provides comprehensive remote control for OBS Studio, allowing users to manage scenes, audio, streaming, recording, and custom actions from their mobile device. It features live previews, performance monitoring, and flexible connection options for both local and remote use.

Scene switching with live previewsReal-time audio mixing and source controlStream and recording start/stop with monitoring
🔧 Utilities
(2)
free
16
OBS Virtual Deck
OBS Virtual Deck
OBS Virtual Deck
Virtual Deck for OBS Studio
Free
🔧 Utilities
(0)
17
Ped Calc
Ped Calc
Ped Calc
by Fernando Luiz Cunha Castelo Branco
$9.99

This medical app provides healthcare professionals with a comprehensive suite of tools for pediatric calculations and diagnostic criteria. It includes features for assessing newborns, calculating medication dosages, and referencing various medical scales and classifications.

Newborn assessment tools (Apgar, Capurro, New Ballard)Medication conversion and dosage calculatorsNutritional status and growth charts
🏥 Medical
(32)
paid
18
OBDII Scanner ELM327 OBD2
OBDII Scanner ELM327 OBD2
OBDII Scanner ELM327 OBD2
OBD2 Scanner and Trouble codes
Free

This app allows you to scan your car's trouble codes and view live data using an OBD2 Bluetooth adapter. It logs statistics and freeze frames for future reference, storing all diagnostic trouble codes (DTCs) on a server.

Scan car trouble codesView live dataLog live statistics
🔧 Utilities
(5)
free with in-app purchases
19
÷ Horário
÷ Horário
÷ Horário
by Fernando Luiz Cunha Castelo Branco
$1.99
🏥 Medical
(0)
20
Camera for OBS Studio
Camera for OBS Studio
Camera for OBS Studio
Turn your device into a webcam
Free

Transform your mobile device into a high-quality webcam for streaming. Offers both wired USB and wireless WiFi connections for low latency and portability. Control your stream remotely and utilize multiple devices for a professional setup.

High-quality video inputWired USB and WiFi connectionsLow latency streaming
📊 Productivity
(3.2K)
free with in-app purchases

FAQ about Obscalc

What are the best obscalc apps for iPhone?
Obstetrics Calculator tops our obscalc apps ranking as of August 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 16 of the top obscalc apps we rank are free to download, including Obstetrics Calculator and OB Calc (cloud).
Obstetrics Calculator shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 23+ obscalc apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Obstetrics Calculator offers multiple methods to determine gestational age, including using the first day of the last menstrual period, ultrasound reports, conception date, or fetal movements (quickening).
The app includes risk estimations for Breast Cancer (Gail Model), Cervical Cancer (ASCCP 2019 Guidelines), and Ovarian Cancer (O-RADS, ADNEX, ROMA). It also provides the probability of successful vaginal birth after Cesarean section.