# APS Physiology vs AAI Events

APS Physiology and AAI Events are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

APS Physiology ships an update fortnightly, AAI Events every 4 weeks. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | APS Physiology | AAI Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/aai-events/id6760202967/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | — | Free |
| Size | 87 MB | 86 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [American Physiological Society](https://appshunter.io/developer/1674934435) | [The American Association of Immunologists, INC](https://appshunter.io/developer/1194127454) |

## What reviewers say

### APS Physiology

[App page](https://appshunter.io/ios/app/aps-physiology/id6759407893)

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

**In-app purchases:** none


### AAI Events

[App page](https://appshunter.io/ios/app/aai-events/id6760202967)

Connect with conference attendees, speakers, and exhibitors. Access the event agenda, view presentations, and take notes directly within the app. Email your notes for easy reference.

**Highlights:** Connect with attendees, speakers, and exhibitors, Review conference agenda, View conference papers and presentations, Take notes, Email notes to yourself

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

**In-app purchases:** none


## Frequently asked questions

### Is APS Physiology free?

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

### Is AAI Events free?

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

### Do APS Physiology or AAI Events have ads?

Neither APS Physiology nor AAI Events shows ads.

### Which is updated more often, APS Physiology or AAI Events?

APS Physiology ships an update fortnightly, and AAI Events every 4 weeks. Most recently, APS Physiology was updated on October 24, 2026 and AAI Events on October 12, 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.*