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Android Apps > Medical > OB Wheels
OB Wheels icon

OB Wheels

by Joshua Steinberg MD · Medical · Free
On Google Play since June 2017 · Data updated 2026-11-08

OB Wheels is made and published by Joshua Steinberg MD. AppBrain is an independent app data site and isn't affiliated with Joshua Steinberg MD. The app name, icon, screenshots and description belong to Joshua Steinberg MD and are shown as published on Google Play.

4.25
236 reviews
100,000+
Downloads
Free

App combines 3 things that clinicians need to get the dates in pregnancy care.

OB Wheels Screenshot 1 of 5
OB Wheels Screenshot 2 of 5
OB Wheels Screenshot 3 of 5
OB Wheels Screenshot 4 of 5
OB Wheels Screenshot 5 of 5
Screenshots by Joshua Steinberg MD, from the Google Play listing
View on Google Play

AppBrain's verdict

EstablishedWell rated
Rating on Google Play
4.25
236 ratings
Installs
180 thousand
Last updated
June 25, 2017
Ads
No ads
Size
2.73 MB

OB Wheels has 180 thousand installs. Users rate it well: 4.3 stars from 236 ratings.

Official page on Google Play

Summary

OB Wheels blends three essential tools for pregnancy-date management into one app: a calendar calculator for EDD/EDC from LMP or ultrasound with GA as of any date, a rotating OB wheel for visual date planning, and an ACOG-backed scheme to reconcile LMP and ultrasound dating. It’s designed for clinicians and educators, and it uses real calendar math to stay accurate across leap years. Total downloads 100,000+; 90 in the last 30 days; rating 4.25 from 236 reviews.

Pros & Cons

  • Clinician-focused workflow aligned with obstetric dating practice
  • Three-in-one tool saves time in clinical use
  • Leap-year calendar accuracy for reliable dating
  • ACOG scheme included for consistent reconciliation of dates
  • On-screen wheel may have a learning curve for new users
  • No explicit privacy or data-use details provided in the data
  • Specialization as an OB-dating tool; not a general calendar app

User feedback

Ratings and reviews on Google Play

Comments on OB Wheels for Android

★★★★★ Henry Obiajulu Eke · Jun 18, 2024
Excellent device for all health care workers most especially for practitioners involved with women's health
★★★★☆ Lionelson Norbert · Jan 4, 2021
Very good. But I suggest customization settings. Like allow to change the date system into DD/MM/YYYY.
★★★★☆ Abdullah Imran · Dec 7, 2022
Good app, just needs some finer controls for the wheel. Rotating the outer wheel without accidentally also rotating the inner wheel is quite difficult.
★☆☆☆☆ A Google user · Feb 11, 2019
V bad... for moving wheel and very lengthy.

Google Play Rating history and histogram

160
14
29
14
14

Store listing

By Joshua Steinberg MD, from Google Play
Description by Joshua Steinberg MD Written by the developer, not by AppBrain. Click to read.
Does the world need another OB-wheel-due-date-calculator app? You bet! OB Wheels combines three things that clinicians need to derive all the dates necessary in pregnancy care, and no other app has this combination.

It contains a calendar calculator to determine EDD (EDC) from LMP or from a sonogram report. The calendar calculator also provides gestational age (EGA) as of any date for a given EDD or LMP. Because the calculator works off the real calendar, it is accurate for leap years too.

Then for all of you who miss your cardboard OB wheel, the app contains one which you can rotate, pinch and zoom, and generally play with just like a regular cardboard wheel. It's a little tricky to learn how to plant two fingers and rotate them rather than pinch-and-zoom to get rotation versus resizing. But the wheel works and it is accurate, especially so because you can zoom in to be sure where the little date hash lines lie.

Finally, the app notes the most recent committee opinion scheme from ACOG on how one might reconcile due dates from LMP and sonograms to arrive at a single final EDD. To my knowledge, the scheme is authority-based and no better or worse than other schemes, but my practice and my learners need a single clear scheme, so this app includes one for easy reference.

As an educator and clinician myself, I am grateful for feedback. Email me via the contact email at my website.

Copyright: 2017 Joshua Steinberg MD, Harshad Loya (Android App Developer), Patrick Madden

Recent changes:
> Fixed position of a text in calculator screen

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
1
App size
2.73 MB
Needs Android
4.0.3+
Content rating
Everyone

Technologies used by OB Wheels

1 libraries
Subscribe to see full permission and library details
Trust & Safety: No listed permissions are provided in the data. OB Wheels is a clinical calculation and education tool focused on obstetric dating; users should verify results within clinical guidelines and patient context.

Releases

Updates seen on Google Play
Version
1.2
Launched
June 2017
  • Jul 13, 2020Installs100,000+ installs
  • Nov 10, 2018Installs50,000+ installs
  • Oct 20, 2017Installs10,000+ installs
  • Sep 8, 2017Installs5,000+ installs
  • Aug 12, 2017Installs1,000+ installs
Show all changes Show fewer

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Installs

Tracked by AppBrain
Last 30 days
90
Play install range
100+ thousand
Launched
June 2017

Installs over time

OB Wheels has been installed 180 thousand times. Over the past 30 days, it has been installed 90 times.

Rankings

Google Play top charts

Google Play Rankings for OB Wheels

This app is not ranked

About the app and developer

About OB Wheels

OB Wheels is a medical app developed by Joshua Steinberg MD.

Install Statistics

OB Wheels has been installed 180 thousand times. In the last 30 days, the app was installed 90 times.

User Ratings

OB Wheels is rated 4.25 out of 5 stars. The rating is based on 240 ratings.

App Information

OB Wheels is freely available from Google Play. The app size is 2.74 MB. The latest version available is 1.2. The last update was on June 25, 2017.

Technical Requirements

OB Wheels requires Android 4.0.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since June 2017.

App Performance Report

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Developer information for Joshua Steinberg MD

Joshua Steinberg MD

jds.pocapps@gmail.com

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Share OB Wheels

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