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Screenshots

  • OB Wheel & EDD Calculator screenshot 1
  • OB Wheel & EDD Calculator screenshot 2
  • OB Wheel & EDD Calculator screenshot 3
  • OB Wheel & EDD Calculator screenshot 4

About OB Wheel & EDD Calculator

The Ultimate Clinical Toolkit for Obstetricians and Midwives. Designed specifically for healthcare professionals, Obstetric Tools is the most precise, fast, and comprehensive pregnancy wheel and clinical calculator available. Whether you are in a busy outpatient clinic or an offline delivery room, get evidence-based results in seconds to optimize your patient care. Built by and for medical professionals, our app replaces traditional cardboard wheels and scattered reference books with a single, highly optimized digital suite. CORE FEATURES Advanced Gestogram (Pregnancy Wheel) Calculate Estimated Due Date (EDD), Gestational Age (GA), and Conception Date instantly. Flexible Dating: Calculate based on Last Menstrual Period (LMP) or reverse-calculate by entering the current Gestational Age from an ultrasound. Highly precise chronologies to track pregnancy milestones effortlessly. Clinical Calculators Estimated Fetal Weight (EFW): Highly accurate calculations based on the global Hadlock IV formula (BPD, HC, AC, FL). Maternal BMI & Weight Gain: Calculate pre-pregnancy BMI and track recommended weight gain per trimester. Fischer Score: Objective evaluation of cardiotocographic (CTG) records. MgSO4 Dosing: Quick and safe calculation for magnesium sulfate infusion in preeclampsia management. Essential Medical Tests & Scales Bishop Score: Assess cervical ripeness and the probability of successful labor induction. Apgar Score: Standardized newborn assessment at 1, 5, and 10 minutes. Silverman-Andersen Score: Evaluate neonatal respiratory distress. Kramer's Rule: Visual assessment of neonatal jaundice. Edinburgh Scale: Postnatal depression screening tool. WHY CHOOSE OBSTETRIC TOOLS? 100% Offline Functionality: We know hospitals have dead zones. Our app works flawlessly in delivery rooms, bunkers, and areas with zero network coverage. Evidence-Based: Every calculator and scale includes a dedicated "Clinical Info" section detailing the medical formulas, parameters, and scientific backing used. Zero-Data Privacy Policy: We respect patient confidentiality. The app acts as a blind calculator. No patient health data is ever collected, saved, or transmitted. About Obstetric Tools Premium While the core app is free to use, Obstetric Tools offers auto-renewing subscriptions to unlock all advanced premium features (like EFW, Bishop, Apgar) and provide a completely ad-free clinical experience. Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period. You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://milkynest.com/privacy

What’s new

Version 2.0.2 · Updated April 7, 2026

We regularly update our OB wheel to ensure the highest accuracy. This version includes performance optimizations for lightning-fast EDD & LMP calculations, UI improvements for patient consultations, and minor bug fixes for reliable daily obstetric practice.

App privacy

The developer, Pedro Iniesta, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers: User ID, Device ID
  • Usage Data: Product Interaction
  • Diagnostics: Crash Data, Performance Data, Other Diagnostic Data

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Usage Data: Product Interaction

Used for: Analytics

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: User ID, Device ID
  • Diagnostics: Crash Data, Performance Data, Other Diagnostic Data

Used for: Third-Party Advertising, App Functionality

Alternatives to OB Wheel & EDD Calculator

Looking for apps like OB Wheel & EDD Calculator? Here are 6 similar apps on the App Store. The highest rated is OB Calc (cloud) (5.0/5), and all 6 are free to download.

OB Wheel & EDD Calculator vs. alternatives
App Rating Price Last updated
OB Wheel & EDD Calculator 4.7 / 5 (3 ratings) Free April 7, 2026
OB Calc (cloud) 5.0 / 5 (5) Free Jul 21, 2026
Obstetrical Calculator – Free May 12, 2025
Fetal Weight Calculator 5.0 / 5 (1) Free Apr 1, 2025
OB Tracker & Pregnancy Wheel 4.7 / 5 (49) Free Sep 10, 2026
Obstetrics Calculator 5.0 / 5 (1) Free Jan 25, 2025
MSD Manual Guide to Obstetrics 4.0 / 5 (4) Free Jul 18, 2026