# OB App Suite > OB/GYN medical calculators for pregnancy, IVF, and patient assessment. (iPhone/iPad app by Andrew Yu.) - Source: https://appshunter.io/ios/app/ob-app-suite/id933612629 (this page in markdown: same URL + `.md`) - Developer: [Andrew Yu](https://appshunter.io/developer/328693314) - Category: Medical, Health & Fitness - Price: Free - Rating: 3.80/5 from 13 App Store ratings · 8 written reviews indexed - Age rating: 17+ - Requires: iOS 10.0 · 23 MB - Languages: American English - Released: 2014-11-03 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ob-app-suite/id933612629/reviews.md ## What is OB App Suite? A collections of OB/GYN specific calculators all in one place. Easy and quick to use. Includes information about the tests and how to interpret results. Features ------------------------------- Currently Tools: • OB Wheel -Same features as preg wheel app. (See below) • Due Date by Sonogram • IVF Wheel -Calculate due date based on IUI date or embryo transfer date. • VBAC Success -Predicts success of VBAC based on patient history. • GBS Algorithm -Determines if antibiotics are indicated and which one to administer • Bishop Score • Pre-Eclampsia Protein/Creatine Ratio -Determines if patient meets pre-eclampsia criteria • APGAR • BMI • BSA • Urine Output Preg Wheel Features ------------------------------------- 1) Quickly input various dates with the date wheel: • Last menstrual period (LMP) • Estimated date of delivery (EDD) • Estimated Gestational Age (EGA) 2) Accurate results: Preg Wheel provides exact dates and accounts for all calendar variance, including leap years. 3) Persistence: Preg Wheel can save the date and date type and restore them when launched to streamline your workflow. 4) Now with even more relevant dates for the entire pregnancy. Know in advance when specific screening tests need to be performed. • 1st Trimesters US • CVS • Quad Screen • Amino • Anatomy US • GTT • Anti-D Prophylaxis • GBS Screen • Elective Delivery ## Key features - OB Wheel for LMP, EDD, and EGA - Due Date by Sonogram - IVF Wheel for due date calculation - VBAC Success prediction - GBS Algorithm for antibiotic indication - Pre-Eclampsia Protein/Creatine Ratio assessment - APGAR, BMI, BSA, and Urine Output calculators ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/ob-app-suite/id933612629/reviews.md ### 3/5 — App crashes *2020-10-22, version 1.7* After update on my phone .... the app crashes when i change to different from last menstrual period to x weeks Tried reseting phone and deleting app and reinstalling it .... and issue still there ### 1/5 — Please fix *2018-03-01, version 1.7* It was an amazing app before the update. Now its disappointing and hard to use. Please fix ### 1/5 — Due date calculator doesn’t work *2017-12-15, version 1.5* Ever since the update the app stops working when you click on the due date calculator. Very frustrating when you try to use this for work. ### 5/5 — I love this app *2017-12-07* Very easy to use with less fuss! ### 5/5 — Good app *2017-10-06, version 1.0* Easy to use and covers all obstetric/gynae calculations ! A must have ! ### 5/5 — Love *2017-09-21, version 1.0* Great app, very well done! ### 5/5 — CNM *2016-05-29, version 1.0* Great app ### 5/5 — Great app *2015-10-15, version 1.0* Good and free ## Frequently asked questions about OB App Suite ### What is OB App Suite? OB App Suite is a collection of OB/GYN specific medical calculators designed for quick and easy use by healthcare professionals. It includes tools for pregnancy dating, IVF calculations, and various patient assessment criteria. ### What are the main features of OB App Suite? Key features include an OB Wheel for calculating Estimated Gestational Age, a Due Date by Sonogram calculator, an IVF Wheel, VBAC Success prediction, GBS Algorithm, Pre-Eclampsia assessment, and calculators for APGAR, BMI, BSA, and Urine Output. ### Is OB App Suite available on Android? Based on the provided data, OB App Suite is supported on iPhone, iPad, and iPod. Information regarding Android compatibility is not available. ### How accurate are the calculations in OB App Suite? The app states that its Preg Wheel provides accurate results and accounts for all calendar variance, including leap years. Other calculators are designed for quick and easy use in clinical settings. ### When was OB App Suite last updated? The latest version of OB App Suite is 1.7, which was last updated on December 28, 2017. The app was initially released on November 3, 2014. ### What is the user rating for OB App Suite? OB App Suite has a rating of 3.8 stars from 13 ratings. This indicates a generally positive but mixed user reception. ### Does OB App Suite have ads? No, OB App Suite does not contain advertisements. It is a free application without any ad-supported components. ### What is the age rating for OB App Suite? OB App Suite has an age rating of 17+. This suggests that the content or complexity of the app is considered appropriate for users aged 17 and older. ## Version history (last 4 releases) ### 1.7 — 2017-12-28 This app has been updated by Apple to display the Apple Watch app icon. Fixed some bugs with date entry using keyboard ### 1.6 — 2017-12-18 Fix bug that caused app to crash when trying to open the preg wheel calculator. New OB Wheel calculator. Same as Preg Wheel app. If you like the old style do not update. New icon Fixed layout of many tools to work with all phone sizes. ### 1.5 — 2017-12-15 New OB Wheel calculator. Same as Preg Wheel app. If you like the old style do not update. New icon Fixed layout of many tools to work with all phone sizes. ### 1.0 — 2014-11-02 No release notes. ## Apps similar to OB App Suite | App | Rating | Price | Category | | --- | --- | --- | --- | | [OB Tracker & Pregnancy Wheel](https://appshunter.io/ios/app/ob-tracker-and-pregnancy-wheel/id1454135001) | 4.9 (45) | Free | Medical | | [Simple Pregnancy Wheel](https://appshunter.io/ios/app/simple-pregnancy-wheel/id1568798323) | 4.8 (85) | Free | Medical | | [OB Wheel for Pregnancy](https://appshunter.io/ios/app/ob-wheel-for-pregnancy/id6451180396) | 4.7 (27) | Free | Medical | | [USPSTF Prevention TaskForce](https://appshunter.io/ios/app/uspstf-prevention-taskforce/id311852560) | 3.6 (68) | Free | Medical | | [Dog Symptom Checker](https://appshunter.io/ios/app/dog-symptom-checker/id392537780) | 1.0 (1) | $2.99 | Medical | | [Cardio Valve](https://appshunter.io/ios/app/cardio-valve/id516325480) | 4.8 (4) | Free | Medical | ## More apps by Andrew Yu - [Preg Wheel](https://appshunter.io/ios/app/preg-wheel/id445303968) - [OB Wheel+](https://appshunter.io/ios/app/ob-wheel-plus/id6757197344) All apps by Andrew Yu: https://appshunter.io/developer/328693314 ## Related topics [ob app suite](https://appshunter.io/ios/topics/ob-app-suite) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*