# ObCalc vs OB Emergencies

The clearest difference is price: OB Emergencies at Free against ObCalc's $6.99. OB Emergencies also leads on iOS requirement (15.0.0 vs 26.0). ObCalc's advantage is chart position (#147 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

OB Emergencies is free to download; ObCalc costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ObCalc ships an update every 5 weeks, OB Emergencies monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | ObCalc | OB Emergencies |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/ob-emergencies/id6480381331/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | — | Free |
| Best chart rank | **#147** | — |
| Size | 3 MB | 47 MB |
| Requires iOS | 26.0 | **15.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Code Nine Labs LLC](https://appshunter.io/developer/983427275) | [Complete Medicine, LLC](https://appshunter.io/developer/1630825166) |

## What reviewers say

### ObCalc

[App page](https://appshunter.io/ios/app/obcalc/id983427276)

**Currently charting:** #147 Top Paid · Medical (US App Store)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OB Emergencies

[App page](https://appshunter.io/ios/app/ob-emergencies/id6480381331)

This app provides healthcare providers in Labor and Delivery with checklists for obstetric emergencies. It includes essential information, lab dropdowns, and actionable items, along with a phone book for critical institutional contacts. Designed for clinical use, it supports informed decision-making during urgent situations.

**Highlights:** Obstetric emergency checklists, Institutional phone book, Lab dropdowns, Actionable item guidance, How-to guide, References for checklists

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ObCalc free?

ObCalc costs $6.99, with no in-app purchases.

### Is OB Emergencies free?

OB Emergencies is free to download, with no in-app purchases.

### Do ObCalc or OB Emergencies have ads?

Neither ObCalc nor OB Emergencies shows ads.

### Which is updated more often, ObCalc or OB Emergencies?

ObCalc ships an update every 5 weeks, and OB Emergencies monthly. Most recently, ObCalc was updated on October 24, 2026 and OB Emergencies on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*