# CR COMEGO vs OB Calc (cloud)

The clearest difference is in-app purchases: CR COMEGO at none against OB Calc (cloud)'s 2. CR COMEGO also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. CR COMEGO asks for nothing beyond the download.

CR COMEGO ships an update every 2 months, OB Calc (cloud) every 3 months. The most recent releases landed on October 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | CR COMEGO | OB Calc (cloud) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 14 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Marco Mondragon](https://appshunter.io/developer/1015125186) | [Glen Botha](https://appshunter.io/developer/943181947) |

## What reviewers say

### CR COMEGO

[App page](https://appshunter.io/ios/app/cr-comego/id1402273070)

**Features:** macOS Compatibility

**In-app purchases:** none


### OB Calc (cloud)

[App page](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465)

This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

**Highlights:** LMP, EDC, Ultrasound, CRL, and IVF calculations, Customizable test date ranges, Cross-device data syncing, PDF report generation, Save individual patient data

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Premium (Annual) | $29.99 | per year |


## Frequently asked questions

### Is CR COMEGO free?

CR COMEGO is free to download, with no in-app purchases.

### Is OB Calc (cloud) free?

OB Calc (cloud) is free to download, with in-app purchases available.

### Do CR COMEGO or OB Calc (cloud) have ads?

Neither CR COMEGO nor OB Calc (cloud) shows ads.

### Which is updated more often, CR COMEGO or OB Calc (cloud)?

CR COMEGO ships an update every 2 months, and OB Calc (cloud) every 3 months. Most recently, CR COMEGO was updated on October 3, 2026 and OB Calc (cloud) on October 27, 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.*