# Prego OB Wheel vs OB Calc (cloud)

Prego OB Wheel and OB Calc (cloud) both sit at 4.9 stars, but that hides the real split: 66% of Prego OB Wheel's written reviews are positive against 0% of OB Calc (cloud)'s. Prego OB Wheel also leads on in-app purchases (none vs 2) and ratings volume (325 vs 5). OB Calc (cloud)'s advantage is price (Free vs $4.99). On rating, update cadence, ads and device support there is nothing between them.

OB Calc (cloud) is free to download; Prego OB Wheel costs $4.99 up front. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. Prego OB Wheel asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Prego OB Wheel against 5.0 for OB Calc (cloud). That said, the two scores are not equally well evidenced: Prego OB Wheel has 325 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 66% of Prego OB Wheel's written reviews are positive against 0% of OB Calc (cloud)'s.

Prego OB Wheel ships an update every 2 months, OB Calc (cloud) every 3 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Prego OB Wheel | OB Calc (cloud) |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.9 (325 ratings)](https://appshunter.io/ios/app/prego-ob-wheel/id1328976834/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews)** |
| Number of ratings | **325** | 5 |
| Positive reviews | **65.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 14 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Fulton](https://appshunter.io/developer/1843978616) | [Glen Botha](https://appshunter.io/developer/943181947) |

## What reviewers say

### Prego OB Wheel

[App page](https://appshunter.io/ios/app/prego-ob-wheel/id1328976834)

This app is a simple obstetrical calculator and patient tracker. It helps healthcare professionals quickly determine pregnancy dates, gestational age, and track patient progress. Save patient information and notes for easy reference.

**Highlights:** Calculate pregnancy dates (LMP, ultrasound, conception, EDD), Determine gestational age, Track pregnancies, Track postpartum patients, Save patient notes (Rh, GBS, GTPAL), List upcoming deliveries

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 🚀 Fast and accurate calculations
- 👍 Practical and helpful in clinic
- 👍 Straightforward and no-frills design
- 👍 Good for identifying patients near due date

**What reviewers complain about**

- 🐛 Lag in loading patient lists
- 🐛 Postpartum patients appear first, pushing current patients down
- 🐛 Limited information can be included per case
- 🐛 Text on screen not appearing properly on some devices
- 🐛 Difficulty sharing data with team members

**Reported bugs**

- Lag in loading patients list
- Text on screen doesn't appear properly
- Last update ruined functionality
- Cannot check simple EDD
- No reset unless you save

**Requested features**

- Search tab for patients
- Separate tabs for antenatal and postnatal patients
- Cloud function for syncing between devices
- Option to calculate gestational age by ultrasound
- Highlight today's date on date wheels


### 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 Prego OB Wheel free?

Prego OB Wheel costs $4.99, with no in-app purchases.

### Is OB Calc (cloud) free?

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

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

OB Calc (cloud) is rated higher. Prego OB Wheel averages 4.9 out of 5 from 325 ratings, while OB Calc (cloud) averages 5.0 from 5 ratings.

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

Neither Prego OB Wheel nor OB Calc (cloud) shows ads.

### Which is updated more often, Prego OB Wheel or OB Calc (cloud)?

Prego OB Wheel ships an update every 2 months, and OB Calc (cloud) every 3 months. Most recently, Prego OB Wheel was updated on October 29, 2026 and OB Calc (cloud) on October 29, 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.*