# AONA Events vs OpNotes

The clearest difference is iOS requirement: AONA Events at 12.2 against OpNotes's 15.0. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for AONA Events against 5.0 for OpNotes. Both are backed by a comparable volume of ratings — 3 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AONA Events | OpNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/aona-events/id1420950949/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/opnotes/id6757565665/reviews) |
| Number of ratings | 3 | **8** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 215 MB | 21 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [The AO North America Inc](https://appshunter.io/developer/1417116321) | [Christian Cullen](https://appshunter.io/developer/1863290402) |

## What reviewers say

### AONA Events

[App page](https://appshunter.io/ios/app/aona-events/id1420950949)

Access all information for AO North America courses, including schedules, materials, venue details, and faculty bios. You can also access your CME directly within the application.

**Highlights:** View event schedules, Access course materials, Venue information, Faculty biographies, Direct CME access

**Features:** macOS Compatibility

**In-app purchases:** none


### OpNotes

[App page](https://appshunter.io/ios/app/opnotes/id6757565665)

This app helps surgical residents document their operative training with evolving case notes, technique libraries, and progress analytics. It provides a comprehensive journal for personal training, not for patient care.

**Highlights:** Detailed operative case documentation, Case minimum tracking, Techniques library, Attending profiles, Dashboard analytics, Cross-device sync, PDF case export

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

**In-app purchases:** none


## Frequently asked questions

### Is AONA Events free?

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

### Is OpNotes free?

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

### Which has better reviews, AONA Events or OpNotes?

AONA Events and OpNotes are both rated 5.0 out of 5 on the App Store, from 3 and 8 ratings respectively.

### Do AONA Events or OpNotes have ads?

Neither AONA Events nor OpNotes shows ads.

### Which is updated more often, AONA Events or OpNotes?

AONA Events ships an update every 2 months, and OpNotes every 2 months. Most recently, AONA Events was updated on October 4, 2026 and OpNotes on October 6, 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.*