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Screenshots

  • OB Calc (cloud) screenshot 1
  • OB Calc (cloud) screenshot 2
  • OB Calc (cloud) screenshot 3
  • OB Calc (cloud) screenshot 4

About OB Calc (cloud)

While similar to a pregnancy wheel, OB Calc (cloud) 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. CALCULATION METHODS • Last Menstrual Period (LMP) • Expected Delivery Date (EDC) • Sonogram Date and Fetal Age (Sonogram) • Crown Rump Length (CRL) • In Vitro Fertilization (IVF) Try the app for free for 7 days. A low monthly autorenewable subscription gives users access to premium features such as all calculation methods and saving of individual patient data. You can reach the developer directly at [email protected] FEATURES • LMP, EDC, Ultrasound, CRL and IVF Method Calculations • Customize up to 15 tests, with date ranges • Data synced across multiple devices • Generate a PDF file • Save individual patient data CRL data reference : https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.7654 Terms & Conditions: https://inpocketsolutions.com/terms ** Disclaimer Remember to test out the app on your specific device to ensure calculations are verified to your expectation.

Ratings & reviews

5.0

5 ratings

5 ★ 100% 4 ★ 0% 3 ★ 0% 2 ★ 0% 1 ★ 0%

What’s new

Version 2.10.1 · Updated July 21, 2026

Support for the latest Liquid Glass features

App privacy

The developer, Glen Botha, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Purchases: Purchase History
  • Contact Info: Email Address
  • Identifiers: User ID

Used for: Analytics, App Functionality

Alternatives to OB Calc (cloud)

Looking for apps like OB Calc (cloud)? Here are 6 similar apps on the App Store. The highest rated is Obstetrics Calculator (5.0/5), and all 6 are free to download.

OB Calc (cloud) vs. alternatives
App Rating Price Last updated
OB Calc (cloud) 5.0 / 5 (5 ratings) Free July 21, 2026
OB Tracker & Pregnancy Wheel 4.7 / 5 (49) Free Sep 10, 2026
Obstetrics Calculator 5.0 / 5 (1) Free Jan 25, 2025
OB Wheel for Pregnancy 4.7 / 5 (39) Free Jan 21, 2024
Gestational Age (by Medfolio) 3.5 / 5 (2) Free Jan 19, 2025
OB Wheel 4.3 / 5 (10) Free Jun 19, 2025
OB Wheel Pregnancy Tracker 4.6 / 5 (26) Free Aug 28, 2024