# CATALYST for Learning vs ACOOG

The clearest difference is update cadence: ACOOG at every 5 weeks against CATALYST for Learning's every 48 months. CATALYST for Learning's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CATALYST for Learning ships an update every 48 months, ACOOG every 5 weeks. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | CATALYST for Learning | ACOOG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/acoog/id1473032869/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 4 MB | 30 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Internet Testing Systems (ITS)](https://appshunter.io/developer/546817214) | [American College of Osteopathic Obstetricians & Gynecologists](https://appshunter.io/developer/1473032868) |

## What reviewers say

### CATALYST for Learning

[App page](https://appshunter.io/ios/app/catalyst-for-learning/id1469065092)

**In-app purchases:** none


### ACOOG

[App page](https://appshunter.io/ios/app/acoog/id1473032869)

Access live and online continuing medical education, forums, news, and resources from the American College of Osteopathic Obstetricians and Gynecologists. Stay connected year-round with this easy-to-use tool.

**Highlights:** Live and online CME access, ACOOG forums, News and newsletters, Resources, Access to past activity materials, Year-round connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is CATALYST for Learning free?

CATALYST for Learning is free to download, with no in-app purchases.

### Is ACOOG free?

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

### Do CATALYST for Learning or ACOOG have ads?

Neither CATALYST for Learning nor ACOOG shows ads.

### Which is updated more often, CATALYST for Learning or ACOOG?

CATALYST for Learning ships an update every 48 months, and ACOOG every 5 weeks. Most recently, CATALYST for Learning was updated on September 10, 2026 and ACOOG on September 17, 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.*