OB Calc Pro

OB Calc Pro

Pregnancy Wheel for doctors

1.06.04for iPhone, iPad
Glen Botha
Dec 2, 2014
Update Date
in Medical
Age Rating
Apps in this category do not contain restricted content.
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.
OB Calc Pro Screenshots
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About OB Calc Pro

Obstetricians, are you tired of calculating important patient dates using a calendar or spreadsheet? While similar to a pregnancy wheel, OB Calc Pro is specifically designed by an obstetrician, for obstetricians. Finally obstetricians have an efficient and simple method to calculate the important test date windows for patients.

(Appreciation to Dr. Rosanne Botha, an amazing OB/GYN, for the inspiration behind this app.)


• Last Menstrual Period (LMP)
• Expected Delivery Date (EDC)
• Sonogram Date and Fetal Age (Sonogram)
• Crown Rump Length (CRL)


8 common test dates are set up by default. However, these test names and date windows can be completely customized in the Settings screen so you can set up your own items if you prefer. OB Calc Pro supports up to 10 test dates.

If you like this app, please consider leaving rating comments as well as emailing me directly with feedback. You can reach the developer directly at support@inpocketsolutions.com

** Disclaimer
Remember to test out the app on your specific device to ensure calculations are verified to your expectation.
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What's New in the Latest Version 1.06.04

Last updated on Jan 31, 2020
Old Versions
Link to the new version of the app which premium features are available to current users for 2020.
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Version History
Jan 31, 2020
Link to the new version of the app which premium features are available to current users for 2020.
Jan 30, 2020
Link to the new version of the app which premium features are available to current users for 2020.
Oct 19, 2019
Support for the date picker when using the iPad floating keyboard
Sep 24, 2019
• Support for devices running iOS 13.
Jan 10, 2019
• Support for newer devices
Oct 18, 2017
• Updated the data tables for the CRL calculation.
Oct 14, 2017
• update to user interface
Jan 4, 2017
Sort tests by ascending date
Manual order tests on the test screen
Nov 5, 2016
User can customize the sonogram week slider maximum value from the settings screen.
Jun 28, 2016
Sonogram week slider values changed to 5 - 16 weeks for easier number selection.
Jun 3, 2016
support for German and French languages
Mar 2, 2016
• Date selector size reduced to single line to fit more test dates on smaller devices. Tap on date to bring up date selector at bottom of screen.
Feb 2, 2016
• Screenshot option has been improved to give the data in a table format for sending via email
Jan 11, 2016
• Added a Share option
• Added a Rate option
Jan 4, 2016
• add video to app info page
• improved navigational menu
Dec 18, 2015
• redesigned layout for iPad devices
Dec 9, 2015
• support for Spanish and Portuguese translations
Nov 20, 2015
• Added screenshot button at top to save screenshot to photo gallery
• Added patient name option. Tap name label to enter a patient name.
• Added more default tests, and increased maximum number of tests from 5 to 10.
Nov 9, 2015
• Added CRL calculation method
• Added LMP Date for EDC, Sonogram and CRL methods
Feb 3, 2015
- Better screen adjustments for different iPhone sizes.

- Calculate button has been removed. App calculates test windows as date and sliders are changed in real time.
Jan 22, 2015
13 January 2015

Added a Settings page where users can now edit the test names and the date windows. If you only want a single date and not a date range, simply enter the weeks and days for the first input and enter 0 for the weeks and days of the second input.

Thanks for your support.
Dec 2, 2014

OB Calc Pro Price


OB Calc Pro FAQ

Click here to learn how to download OB Calc Pro in restricted country or region.
Check the following list to see the minimum requirements of OB Calc Pro.
OB Calc Pro supports English, French, German, Portuguese, Spanish

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