# ACOG vs OB Wheels

The clearest difference is review sentiment: ACOG at 90% against OB Wheels's 20%. ACOG also leads on rating (4.9 vs 2.3) and ratings volume (6.3K vs 15). OB Wheels's advantage is iOS requirement (7.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ACOG holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: ACOG has 6.3K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 90% of ACOG's written reviews are positive against 20% of OB Wheels's.

ACOG ships an update every 3 months, OB Wheels every 18 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ACOG | OB Wheels |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (6.3K ratings)](https://appshunter.io/ios/app/acog/id616323665/reviews)** | [2.3 (15 ratings)](https://appshunter.io/ios/app/ob-wheels/id969845527/reviews) |
| Number of ratings | **6.3K** | 15 |
| Positive reviews | **89.6% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Monetization | Free | Free |
| Size | 29 MB | 3 MB |
| Requires iOS | 17.0 | **7.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Fountainhead Mobile Solutions](https://appshunter.io/developer/1113758990) | [Joshua D. steinberg](https://appshunter.io/developer/374154837) |

## What reviewers say

### ACOG

[App page](https://appshunter.io/ios/app/acog/id616323665)

This app provides obstetricians and gynecologists with essential tools and resources for women's healthcare. Access clinical guidelines, practice advisories, and helpful calculators to support your medical practice.

**Highlights:** EDD Calculator, Indicated Delivery tool (members only), Clinical Consensus documents, Clinical Practice Guidelines, Practice Advisories

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick access to clinical guidance
- 👍 Well-organized and easy to navigate
- 🔍 Convenient way to stay up-to-date with guidelines
- ⚡ Essential for OB-GYNs and providers
- 📚 Excellent resource for clinical reference

**What reviewers complain about**

- 🐛 Occasional crashes and compatibility issues
- 🔍 Could use more advanced search functionality
- 👨‍⚕️ Requires ACOG membership to access full features

**Reported bugs**

- App crashes on launch after updates
- Compatibility issues with older iOS versions

**Requested features**

- Bishop score calculator
- More extensive search engine
- Improved user interface


### OB Wheels

[App page](https://appshunter.io/ios/app/ob-wheels/id969845527)

This app calculates due dates, gestational age, and reconciles sonogram and LMP dates using a digital OB wheel and calendar. It offers a familiar interactive wheel for precise date calculations, accounting for leap years.

**Highlights:** Calendar calculator for EDD/EDC, Gestational age calculation, Interactive digital OB wheel, Reconciliation of due dates, Leap year accuracy

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

**In-app purchases:** none


## Frequently asked questions

### Is ACOG free?

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

### Is OB Wheels free?

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

### Which has better reviews, ACOG or OB Wheels?

ACOG is rated higher. ACOG averages 4.9 out of 5 from 6.3K ratings, while OB Wheels averages 2.3 from 15 ratings.

### Do ACOG or OB Wheels have ads?

Neither ACOG nor OB Wheels shows ads.

### Which is updated more often, ACOG or OB Wheels?

ACOG ships an update every 3 months, and OB Wheels every 18 months. Most recently, ACOG was updated on November 1, 2026 and OB Wheels on November 6, 2026.

---

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