1. Home
  2. 🏥 Medical
  3. Perfect OB Wheel
Perfect OB Wheel

Perfect OB Wheel

Obstetrics calculator

3.6K ratings
200 reviews
#131 in paid Medical
🏥 Medical
$1.99
In-App Purchases

Details

Released
October 16, 2008
Updated
August 11, 2026

Features

Developer

Evan Schoenberg
✨Promote your app ✨
Perfect OB Wheel screenshot #1 for iPhone
Perfect OB Wheel screenshot #2 for iPhone
Perfect OB Wheel screenshot #3 for iPhone
Perfect OB Wheel screenshot #4 for iPhone
Perfect OB Wheel screenshot #5 for iPhone
Perfect OB Wheel screenshot #6 for iPhone
Perfect OB Wheel screenshot #7 for iPhone
Perfect OB Wheel screenshot #8 for iPhone
Perfect OB Wheel screenshot #9 for iPhone
Perfect OB Wheel screenshot #10 for iPhone
iphone
ipad
🧾$4.99
In-App Purchase↘︎
📉no. 131
Charts↘︎
📌Ready
Reviews summary↘︎
⭐200
Reviews↘︎
📝17+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 1 week
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app is a comprehensive obstetrics calculator that provides detailed pregnancy information. It offers flexible input options and displays thorough results including estimated due dates, gestational ages, and fetal growth estimates.

✓Flexible input (LMP, conception, EDC, ultrasound)
✓Fast data entry options
✓Detailed pregnancy results
✓Accurate date calculations
✓Persistence of last used data
✓Optional pregnancy tracking upgrade
Show original description

What users say about Perfect OB Wheel

Reviews of Perfect OB Wheel are mostly positive: the Medical app is rated 4.9/5 from 3.6K App Store ratings. What users like most: extremely helpful, couldn't do my job without it. Top complaints: rip off to force you to pay more, app stopped opening. Summarized from real user reviews.

Positive things

  • 🚀Extremely helpful
  • 🚀Couldn't do my job without it
  • 🚀Perfect wheel is well-named
  • 🚀I love this app!
  • 🚀Great app!!
  • 🚀Easily the fastest way and most flexible app
  • 🚀Use all the time
  • 🚀Could not work without it
  • 🚀Very Helpful
  • 🚀I use this app at work every day
  • 🚀Love this app! As a L&D RN for many years, this app gives me a quick and accurate info!
  • 🚀On wheel
  • 🚀Help!
  • 🚀The best tool
  • 🚀Showed to my OB who loved it
  • 🚀Use it all the time!
  • 🚀Love it!
  • 🚀Great app
  • 🚀Perfect for tool for the OB setting
  • 🚀Best OB wheel app
  • 🚀Great app
  • 🚀Same app my OB uses!
  • 🚀Excellent app. Extremely helpful in keeping a small private practice organized!
  • 🚀Great app.
  • 🚀Class A
  • 🚀OB Wheel
  • 🚀Great for OB in med school or residency
  • 🚀Great app!
  • 🚀Very helpful and easy to use
  • 🚀Nice tool
  • 🚀Great App
  • 🚀Brilliant!
  • 🚀Very accurate!
  • 🚀Good app
  • 🚀Perfect wheel
  • 🚀Best wheel
  • 🚀Love it!!!!
  • 🚀Paed doc
  • 🚀Perfect
  • 🚀Very specific, but excellent use.
  • 🚀Perfectly implemented
  • 🚀Another outstanding application from Evan

Negative things

  • 🐛rip off to force you to pay more
  • 🐛App stopped opening
  • 🐛Stopped working after update 45
  • 🐛Crashing!!
  • 🐛Latest update
  • 🐛Why!!!
  • 🐛App crashes after update
  • 🐛What wheel
  • 🐛Crashing!!
  • 🐛Latest update
  • 🐛Stopped working after update
  • 🐛Dates
  • 🐛Was great until the update
See all reviews

What's New in Perfect OB Wheel

59.1

August 11, 2026

• Fixed a crash at launch on iPads running iOS 26. • New in Settings: Back Up All Data — export a complete copy of your patient database and photos. • The app now keeps automatic local snapshots of your database for extra data safety.

More
1

Subscriptions & In-App Purchases

$4.99

Perfect OB Tracker

Upgrade to track any number of pregnancies, with immediate visibility of due date and gestational age.

Charts

Top Paid

📉 131-70

Medical

This app dropped -70 positions in Medical chart.

Last updated on November 2, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Ótimo

Ótimo
PRPau de rato

Great app!

I love this app. It’s easy to use.
EElastiwoman

Love ite

I love this app. But can you update the notes so that I can insert pictures? Thank you!
Ssnowqueentaiga

Extremely helpful

I am a nurse in a prenatal clinic and use this multiple times a day. So convenient having everything in one place whether you start with last menstrual period, estimated due date or gestational age, It all works quickly and flawlessly.
MMizIrene

Le faltan detalles

Es una aplicación simple y práctica pero le hacen falta algunos detalles para alcanzar la 5 estrella
PPioncho
See 195 more reviews

Developer apps

MediMath Medical Calculator
MediMath Medical Calculator

by Evan Schoenberg

🏥 Medical

(41)

$0.99
ATP3 Lipids Cholesterol Management
ATP3 Lipids Cholesterol Management

Cholesterol guidelines

🏥 Medical

(3)

$1.99
Rowmote
Rowmote

Verstaile Remote for Mac

🔧 Utilities

(86)

$0.99
In-App Purchases
Optics Clinical Calculator
Optics Clinical Calculator

by Evan Schoenberg

🏥 Medical

(3)

$4.99
MedAbbreviations
MedAbbreviations

Medical Abbreviations

🏥 Medical

(272)

$0.99
See developer apps

User experience

🐞

Reported Bugs

3 issues

App crashes after update

Bug

Delivered today button not working after upgrade

Bug

Dates keep changing when entering info

Bug
✨

Requested Features

5 requests

Date-adjustment for women who have a five week menstrual cycle

Feature

More fields for infant info, apgars and weight

Feature

Ability to adjust cycle length

Feature

Ability to type in a gestation and get a date or type in a date and get a gestation

Feature

Calculate GA on a specific date

Feature

FAQ

What does the Perfect OB Wheel app do?

The Perfect OB Wheel app is a thorough obstetrics calculator designed to provide detailed pregnancy information. It helps users determine estimated due dates, gestational ages, and other key pregnancy milestones based on various input methods.

What are the key features of this pregnancy calculator?

Key features include flexible input options such as last menstrual period (LMP), conception date, EDC, and ultrasound dating. It offers fast data entry, accurate results accounting for leap years, and displays comprehensive information like estimated due date, trimester end dates, and expected fetal growth.

Is the Perfect OB Wheel app free to use?

The core functionality of the Perfect OB Wheel app is available for free. However, an optional 'Perfect OB Tracker' upgrade is offered as an in-app purchase, which provides additional features for tracking multiple pregnancies and postpartum details.

What information can I get from the app?

The app provides a wide range of information including the Estimated Due Date (EDC), LMP Date, Conception Date, 1st and 2nd Trimester End Dates, Gestational Age, Conceptional Age, and Expected Fetal Length and Weight based on standard growth curves.

Who is this app intended for?

This app is intended for healthcare professionals, such as obstetricians and midwives, as well as expectant parents who want a reliable and detailed tool for calculating and tracking pregnancy-related dates and information.