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App Store Apps > Medical > Perfect OB Wheel
Perfect OB Wheel icon

Perfect OB Wheel

by Evan Schoenberg · Medical · $1.99
On the App Store since before 2010 · Data updated 2026-11-01

Perfect OB Wheel is made and published by Evan Schoenberg. AppBrain is an independent app data site and isn't affiliated with Evan Schoenberg. The app name, icon, screenshots and description belong to Evan Schoenberg and are shown as published on the App Store.

AppBrain's verdict

EstablishedLoved by users
Rating on App Store
4.92
3,603 ratings
Last updated
August 11, 2026
Size
13.8 MB

Users love it: 4.9 stars from 3,603 ratings. Its best ranking is #30 in Top Paid, Medical in United States.

Official page on the App Store

User feedback

Ratings and reviews on the App Store

Comments on Perfect OB Wheel for iOS

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Store listing

By Evan Schoenberg, from the App Store
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Screenshots by Evan Schoenberg, from the the App Store listing
Description by Evan Schoenberg Written by the developer, not by AppBrain. Click to read.
Simple, fast, yet more thorough than any other pregnancy wheel available for the iPhone, Perfect OB Wheel is better than just a replacement for your trusty paper wheel.

Here's why Perfect OB Wheel is your best choice of gestational calculator:

1) Input flexibility: Start with one of:
• Last menstrual period (LMP)
• Conception date
• Estimated date of confinement/delivery (EDC)
• Ultrasound dating: Number of weeks and days gestation as of a given date ("X Weeks").

2) Input speed: Other wheels for the iPhone make you conform to them for entering your patient's information. Why not be able to choose based on how you are holding the phone and what else you are doing at the same time?
• Use the numeric entry pad (0 3 3 0 2 0 0 8) and immediately see the results, OR
• Spin the date wheel at the bottom of the screen and tap Next.

3) Thorough results: All the information you would expect from a classic wheel, plus more:
• Estimated Due Date
• LMP Date
• Conception Date
• 1st Trimester End Date
• 2nd Trimester End Date
• Gestational Age
• Conceptional Age
• Expected Fetal Length based on standard fetal growth curves
• Expected Fetal Weight based on standard fetal growth curves ("How much does my baby weigh, doctor?")

Results are relative to 'today' by default; this can be quickly changed to reflect any date by tapping the 'today' button and selecting a new date.

4) Accurate results: Perfect OB Wheel provides exact dates and accounts for all calendar variance, including leap years.

5) Persistence: Perfect OB Wheel remembers the date and date type you last used and restores them when launched to streamline your workflow.

6) Perfect OB Tracker upgrade: Available as an in-app purchase update, the Perfect OB Tracker lets you track any number of pregnancies, with at-a-glance due date and gestational age and one-tap access to all the data Perfect OB Wheel provides. A picture and text notes can be kept on each patient. Postpartum tracking is also available. Passcode locking is available for HIPAA compliance.
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
$1.99
App size
13.8 MB
Content rating
High

Technologies used by Perfect OB Wheel

Releases

Updates seen on the App Store
Version
59.1
Launched
before 2010

No changelog data

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Rankings

App Store top charts
Highest rank
#30
Chart
Top Paid
Medical
Country
United States

App Store Rankings for Perfect OB Wheel

Top rankings

Rank Country Category List
30 United States Medical Top Paid
30 Iran Medical Top Paid
31 Brazil Medical Top Paid
31 Portugal Medical Top Paid
33 Russia Medical Top Paid
34 Indonesia Medical Top Paid
35 Poland Medical Top Paid
74 Canada Medical Top Paid
38 Italy Medical Top Paid
39 Saudi Arabia Medical Top Paid

Ranking history in United States

About the app and developer

About Perfect OB Wheel

Perfect OB Wheel is a medical app developed by Evan Schoenberg.

User Ratings

Perfect OB Wheel is rated 4.92 out of 5 stars. The rating is based on 3.6 thousand ratings.

App Information

Perfect OB Wheel costs $1.99. The app size is 13.84 MB. The latest version available is 59.1. The last update was on August 11, 2026.

Technical Requirements

The app has a content rating of High Maturity. The app has been available on the App Store since before 2010.

Developer information for Evan Schoenberg

Evan Schoenberg

Address:

Frequently asked questions about Perfect OB Wheel

Is Perfect OB Wheel free?

No. Perfect OB Wheel costs $1.99 on the App Store.

Is Perfect OB Wheel still available?

Yes. Perfect OB Wheel is on the App Store, and the last update we saw was on August 11, 2026.

How large is Perfect OB Wheel?

Perfect OB Wheel is 13.84 MB.

Is Perfect OB Wheel suitable for children?

App Store gives Perfect OB Wheel a high maturity rating. It is meant for adults.

How do people rate Perfect OB Wheel?

Perfect OB Wheel scores 4.92 out of 5 stars, from 3,603 ratings on the App Store.

Who made Perfect OB Wheel?

Perfect OB Wheel was developed by Evan Schoenberg. It is listed in the medical category on the App Store.

What are the best alternatives to Perfect OB Wheel?

People looking at Perfect OB Wheel also look at these medical apps: ACOG, MD on Call, ASCCP Management Guidelines, Prevent Group B Strep(GBS), Lanthier.

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Overview Alternatives Reviews Rankings Technology
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