# OB Calc Pro — user reviews

> 2 indexed App Store user reviews of OB Calc Pro by Glen Botha, rated 5.00/5 from 2 ratings.

- Source: https://appshunter.io/ios/app/ob-calc-pro/id943181948/reviews
- App overview in markdown: https://appshunter.io/ios/app/ob-calc-pro/id943181948.md
- Rating breakdown: 5★ 2 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (2 lowest-rated)

### 5/5 — Can't work without it

*2017-10-18*

Usually it's spot on so if I forget my phone at home and don't have it to wheel out my patients I feel totally lost. This is an especially great tool for those of us who need reading glasses to see those tiny wheels.
Highly recommend it and have had several of my coworkers download it for the same reason

**Developer response:** So glad to hear you find the app useful.  Thanks for spreading the word to your coworkers.

### 5/5 — Great app for calculating NT & FIS testing date ranges

*2015-11-10*

Great straightforward app and at a great price. Responsive developer. 
Let's me calculate all the testing date ranges for the first and second trimester prenatal aneuploidy screening tests.

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*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.*