---
title: "OB Wheels - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 "
---

# OB Wheels — United States

![OB Wheels App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/86/dc/b6/86dcb6d0-e288-7501-174d-88b345bb3ae9/AppIcon-1x_U007emarketing-0-85-220-0-4.jpeg/434x0w.png)

**Developer:** [Joshua D. steinberg](https://apptail.io/developer/joshua-d-steinberg-wAjb)
**Category:** Medical
**Rating:** 2.3/5 (15 ratings)
**Price:** Free
**Bundle ID:** com.joshuasteinberg.OBWheels
**Store:** Apple App Store
**Country:** United States
**Version:** 1.2 (released 2018-02-07)
**Original Release:** 2015-03-23
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id969845527)
**AppTail Page:** [https://apptail.io/app/ob-wheels-Wrpb/united-states](https://apptail.io/app/ob-wheels-Wrpb/united-states)

## OB Wheels Description
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.

## OB Wheels Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/1d/31/d6/1d31d61f-6f7d-564a-2e34-0d3977fbae60/pr_source.png/1242x2208.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/20/d5/bb/20d5bbf8-0217-ed59-f388-7033f5424071/pr_source.png/1242x2208.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple118/v4/47/a8/b3/47a8b340-428d-9a24-376d-266f2b9c4aa9/pr_source.png/1242x2208.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/ee/b0/d4/eeb0d474-2cb2-6930-d0e3-d7644ea78431/pr_source.png/1242x2208.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple62/v4/a1/bb/4b/a1bb4b98-6e19-4652-3ad3-ecde706f3b97/pr_source.png/1242x2208.png)

## OB Wheels Rating Breakdown in United States
- 5 stars: 3 (20%)
- 4 stars: 0 (0%)
- 3 stars: 2 (13%)
- 2 stars: 3 (20%)
- 1 stars: 7 (47%)

## OB Wheels Reviews in United States

### *---- "Horrible"
This was very difficult to use. Deleting ASAP!
-- Kaliekie, 2020-10-23

### *---- "Difficult to manipulate wheel"
Don’t bother with this one, it’s too hard to move the wheel. Plus, there is no spot for LMP on the outer wheel.
-- traveldoc9, 2019-12-04

### ***** "Works great"
I don’t understand all the negative reviews. You put in the LMP or the ultrasound Dating and it tells you what you need to know. Simple as that. Tells you when to use U/S vs LMP also. The “wheel” is clunky and kind of pointless if you ask me. I always just use the calendar based calculator.
-- Avesnovuelan, 2019-08-27

### **--- "Cumbersome"
Wheel is cumbersome and hard to use. Too much screen manipulation required to make it easy to use. Still....it’s worth the price.
-- RMB85, 2019-03-04

### ***** "It IS tricky to use, but it DOES work"
So, the app has two functions. One is the Calendar Based Calculator and the other is the Traditional OB Wheel. The OB Wheel is REALLY tricky to use (the app says it so itself in the Wheel window) and does take a lot of practice to get the grip of it, but does work like any other cardboard wheel. The calculator is digital, so I don’t understand how anyone can have problem using it or find it complicated, except that don’t know how to properly use their phone and/or have little fine touch skills. 

To the developers, thanks for making this nice app and leaving it free of cost. As a suggestion, maybe if it were compatible with iPad it would be easier for more users to be able to work with the Traditional OB Wheel, as the screen of an iPhone is kinda small (even in the iPhone Plus) to maneuver it. Nevertheless, very helpful.
-- lebronAD, 2018-02-03

### **--- "Difficult to use"
OB nurse for 20 years. Enjoy the online calculators rather than looking at a wheel. Neither of the applications within the app were easy to use to find the gestational age. I went looking for another.
-- Brenna1974, 2017-10-03

### *---- "OB Wheels"
In your last update Mar 8 2016 this app never installed after many trials. Will you find solution to this problem
Thanks
-- Mmbeiruti, 2016-03-10

[View all OB Wheels reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## OB Wheels Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Philippines | Medical | #26 |
| Top Free | Peru | Medical | #65 |
| Top Free | Thailand | Medical | #66 |
| Top Free | South Africa | Medical | #81 |
| Top Free | Greece | Medical | #83 |
| Top Free | Dominican Republic | Medical | #140 |
| Top Free | Indonesia | Medical | #170 |
| Top Free | Colombia | Medical | #226 |
| Top Free | Vietnam | Medical | #237 |
| Top Free | Argentina | Medical | #244 |
| Top Free | Nigeria | Medical | #248 |

## OB Wheels Discovered Keywords
- ob wheel
- perfect wheel
- obstetrical calculator
- perfect ob wheel
- date wheel date calculator
- pregnancy wheel
- due date calculator
- acog
- date wheel
- obstetrics and gynecology

## Apps Similar to OB Wheels
- [ASCCP Management Guidelines](https://apptail.io/app/asccp-management-guidelines-sqH/united-states)
- [Contraception](https://apptail.io/app/contraception-afR/united-states)
- [STI Tx Guide](https://apptail.io/app/sti-tx-guide-bfR/united-states)
- [Calendrier de grossesse](https://apptail.io/app/calendrier-de-grossesse-FQU/united-states)
- [ACOG](https://apptail.io/app/acog-HZZ/united-states)
- [Акушерский Калькулятор](https://apptail.io/app/akuserskii-kalkuliator-rxJb/united-states)
- [OB Tracker & Pregnancy Wheel](https://apptail.io/app/ob-tracker-pregnancy-wheel-qkPb/united-states)
- [OB Calc (nube)](https://apptail.io/app/ob-calc-nube-lGnd/united-states)
- [Simple Pregnancy Wheel](https://apptail.io/app/simple-pregnancy-wheel-ARPd/united-states)
- [Perfect OB Wheel](https://apptail.io/app/perfect-ob-wheel-KXZd/united-states)

## OB Wheels Available In
- [United States](https://apptail.io/app/ob-wheels-Wrpb/united-states)
- [Philippines](https://apptail.io/app/ob-wheels-Wrpb/philippines)
- [Mexico](https://apptail.io/app/ob-wheels-Wrpb/mexico)
- [Canada](https://apptail.io/app/ob-wheels-Wrpb/canada)
- [Thailand](https://apptail.io/app/ob-wheels-Wrpb/thailand)
- [Vietnam](https://apptail.io/app/ob-wheels-Wrpb/vietnam)
- [India](https://apptail.io/app/ob-wheels-Wrpb/india)
- [Paraguay](https://apptail.io/app/ob-wheels-Wrpb/paraguay)
- [Ecuador](https://apptail.io/app/ob-wheels-Wrpb/ecuador)
- [New Zealand](https://apptail.io/app/ob-wheels-Wrpb/new-zealand)
- [Chile](https://apptail.io/app/ob-wheels-Wrpb/chile)
- [Latvia](https://apptail.io/app/ob-wheels-Wrpb/latvia)
- [United Kingdom](https://apptail.io/app/ob-wheels-Wrpb/united-kingdom)
- [China](https://apptail.io/app/ob-wheels-Wrpb/china)
- [Cyprus](https://apptail.io/app/ob-wheels-Wrpb/cyprus)
- [Czechia](https://apptail.io/app/ob-wheels-Wrpb/czechia)
- [Germany](https://apptail.io/app/ob-wheels-Wrpb/germany)
- [Denmark](https://apptail.io/app/ob-wheels-Wrpb/denmark)
- [Dominican Republic](https://apptail.io/app/ob-wheels-Wrpb/dominican-republic)
- [Algeria](https://apptail.io/app/ob-wheels-Wrpb/algeria)
- [Estonia](https://apptail.io/app/ob-wheels-Wrpb/estonia)
- [Egypt](https://apptail.io/app/ob-wheels-Wrpb/egypt)
- [Spain](https://apptail.io/app/ob-wheels-Wrpb/spain)
- [Finland](https://apptail.io/app/ob-wheels-Wrpb/finland)
- [France](https://apptail.io/app/ob-wheels-Wrpb/france)
- [Greece](https://apptail.io/app/ob-wheels-Wrpb/greece)
- [Hong Kong SAR China](https://apptail.io/app/ob-wheels-Wrpb/hong-kong)
- [Honduras](https://apptail.io/app/ob-wheels-Wrpb/honduras)
- [Croatia](https://apptail.io/app/ob-wheels-Wrpb/croatia)
- [Hungary](https://apptail.io/app/ob-wheels-Wrpb/hungary)
- [Indonesia](https://apptail.io/app/ob-wheels-Wrpb/indonesia)
- [Ireland](https://apptail.io/app/ob-wheels-Wrpb/ireland)
- [Israel](https://apptail.io/app/ob-wheels-Wrpb/israel)
- [Italy](https://apptail.io/app/ob-wheels-Wrpb/italy)
- [Jordan](https://apptail.io/app/ob-wheels-Wrpb/jordan)
- [Japan](https://apptail.io/app/ob-wheels-Wrpb/japan)
- [South Korea](https://apptail.io/app/ob-wheels-Wrpb/south-korea)
- [Kuwait](https://apptail.io/app/ob-wheels-Wrpb/kuwait)
- [Cayman Islands](https://apptail.io/app/ob-wheels-Wrpb/cayman-islands)
- [Kazakhstan](https://apptail.io/app/ob-wheels-Wrpb/kazakhstan)
- [Lebanon](https://apptail.io/app/ob-wheels-Wrpb/lebanon)
- [Sri Lanka](https://apptail.io/app/ob-wheels-Wrpb/sri-lanka)
- [Malta](https://apptail.io/app/ob-wheels-Wrpb/malta)
- [Malaysia](https://apptail.io/app/ob-wheels-Wrpb/malaysia)
- [Namibia](https://apptail.io/app/ob-wheels-Wrpb/namibia)
- [Nigeria](https://apptail.io/app/ob-wheels-Wrpb/nigeria)
- [Netherlands](https://apptail.io/app/ob-wheels-Wrpb/netherlands)
- [Norway](https://apptail.io/app/ob-wheels-Wrpb/norway)
- [Oman](https://apptail.io/app/ob-wheels-Wrpb/oman)
- [Panama](https://apptail.io/app/ob-wheels-Wrpb/panama)
- [Peru](https://apptail.io/app/ob-wheels-Wrpb/peru)
- [Pakistan](https://apptail.io/app/ob-wheels-Wrpb/pakistan)
- [Poland](https://apptail.io/app/ob-wheels-Wrpb/poland)
- [Portugal](https://apptail.io/app/ob-wheels-Wrpb/portugal)
- [Qatar](https://apptail.io/app/ob-wheels-Wrpb/qatar)
- [Romania](https://apptail.io/app/ob-wheels-Wrpb/romania)
- [Russia](https://apptail.io/app/ob-wheels-Wrpb/russia)
- [Saudi Arabia](https://apptail.io/app/ob-wheels-Wrpb/saudi-arabia)
- [Sweden](https://apptail.io/app/ob-wheels-Wrpb/sweden)
- [Singapore](https://apptail.io/app/ob-wheels-Wrpb/singapore)
- [Slovakia](https://apptail.io/app/ob-wheels-Wrpb/slovakia)
- [Senegal](https://apptail.io/app/ob-wheels-Wrpb/senegal)
- [El Salvador](https://apptail.io/app/ob-wheels-Wrpb/el-salvador)
- [Türkiye](https://apptail.io/app/ob-wheels-Wrpb/turkey)
- [Taiwan](https://apptail.io/app/ob-wheels-Wrpb/taiwan)
- [Ukraine](https://apptail.io/app/ob-wheels-Wrpb/ukraine)
- [Uganda](https://apptail.io/app/ob-wheels-Wrpb/uganda)
- [South Africa](https://apptail.io/app/ob-wheels-Wrpb/south-africa)
- [Angola](https://apptail.io/app/ob-wheels-Wrpb/angola)
- [Argentina](https://apptail.io/app/ob-wheels-Wrpb/argentina)
- [Austria](https://apptail.io/app/ob-wheels-Wrpb/austria)
- [Australia](https://apptail.io/app/ob-wheels-Wrpb/australia)
- [Azerbaijan](https://apptail.io/app/ob-wheels-Wrpb/azerbaijan)
- [Belgium](https://apptail.io/app/ob-wheels-Wrpb/belgium)
- [Bulgaria](https://apptail.io/app/ob-wheels-Wrpb/bulgaria)
- [Bahrain](https://apptail.io/app/ob-wheels-Wrpb/bahrain)
- [Brunei](https://apptail.io/app/ob-wheels-Wrpb/brunei)
- [Brazil](https://apptail.io/app/ob-wheels-Wrpb/brazil)
- [Belarus](https://apptail.io/app/ob-wheels-Wrpb/belarus)
- [Switzerland](https://apptail.io/app/ob-wheels-Wrpb/switzerland)
- [Colombia](https://apptail.io/app/ob-wheels-Wrpb/colombia)
- [Venezuela](https://apptail.io/app/ob-wheels-Wrpb/venezuela)
- [United Arab Emirates](https://apptail.io/app/ob-wheels-Wrpb/united-arab-emirates)
- [Uruguay](https://apptail.io/app/ob-wheels-Wrpb/uruguay)
- [Lithuania](https://apptail.io/app/ob-wheels-Wrpb/lithuania)
- [Ghana](https://apptail.io/app/ob-wheels-Wrpb/ghana)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*