# OB Calc (cloud) vs OB Wheel+

The clearest difference is in-app purchases: OB Wheel+ at none against OB Calc (cloud)'s 2. OB Calc (cloud)'s advantage is ads (none vs shown) and ratings volume (5 vs 1). On price, rating and iOS requirement there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for OB Calc (cloud) against 5.0 for OB Wheel+. That said, the two scores are not equally well evidenced: OB Calc (cloud) has 5 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | OB Calc (cloud) | OB Wheel+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ob-wheel-plus/id6757197344/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 14 MB | 11 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Glen Botha](https://appshunter.io/developer/943181947) | [Andrew Yu](https://appshunter.io/developer/328693314) |

## What reviewers say

### 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 |


### OB Wheel+

[App page](https://appshunter.io/ios/app/ob-wheel-plus/id6757197344)

This medical app offers precise pregnancy calculations for healthcare professionals and expectant parents. It features multiple calculation modes, projected gestational age, and a timeline of key clinical milestones and screenings. Users can also filter milestones by trimester and compare fetal growth with relatable size comparisons.

**Highlights:** Multiple calculation modes (LMP, EDD, IVF, GA), Projected gestational age calculation, Clinical milestone timeline, Trimester filtering, Fetal size comparisons

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OB Calc (cloud) free?

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

### Is OB Wheel+ free?

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

### Which has better reviews, OB Calc (cloud) or OB Wheel+?

OB Calc (cloud) and OB Wheel+ are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do OB Calc (cloud) or OB Wheel+ have ads?

OB Wheel+ shows ads; OB Calc (cloud) does not.

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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.*