# AIRVO 2 vs ABG Expert

AIRVO 2 and ABG Expert both sit at 4.6 stars, but that hides the real split: 100% of ABG Expert's written reviews are positive against 75% of AIRVO 2's. ABG Expert also leads on update cadence (every 5 months vs every 13 months). On price, rating, ratings volume and ads there is nothing between them.

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

ABG Expert holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 8 and 9 respectively. Written reviews point the same way: 75% of AIRVO 2's written reviews are positive against 100% of ABG Expert's.

AIRVO 2 ships an update every 13 months, ABG Expert every 5 months. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AIRVO 2 | ABG Expert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (8 ratings)](https://appshunter.io/ios/app/airvo-2/id734808115/reviews) | **[4.8 (9 ratings)](https://appshunter.io/ios/app/abg-expert/id885575488/reviews)** |
| Number of ratings | 8 | **9** |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 61 MB | 2 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Fisher & Paykel Healthcare Limited](https://appshunter.io/developer/634784377) | [Brian Dale Vander Werf MD Inc](https://appshunter.io/developer/1521935908) |

## What reviewers say

### AIRVO 2

[App page](https://appshunter.io/ios/app/airvo-2/id734808115)

This app simulates the user interface of a medical device, allowing users to learn its functions. Explore settings, oxygen levels, and simulated warnings through interactive tutorials and video clips. It serves as a training tool and does not control the actual device.

**Highlights:** Simulated user interface, Adjustable settings, Oxygen level simulation, Warning simulations, Interactive tutorials, Video guides

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

**In-app purchases:** none


### ABG Expert

[App page](https://appshunter.io/ios/app/abg-expert/id885575488)

This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.

**Highlights:** Validated accuracy with real-world testing, Plausibility checks for physiologically impossible data, Automatic anion gap correction with albumin, Detailed explanations with equations, Separate or combined analysis of ABG, anion gap, A-a gradient, Customizable normal ranges for anion gap and delta gap, Age and barometric pressure adjustments for A-a gradient, Support for SI and non-SI units, Color-coded results and differential diagnoses, Adjustments for chronic respiratory conditions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AIRVO 2 free?

AIRVO 2 is free to download, with no in-app purchases.

### Is ABG Expert free?

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

### Which has better reviews, AIRVO 2 or ABG Expert?

ABG Expert is rated higher. AIRVO 2 averages 4.6 out of 5 from 8 ratings, while ABG Expert averages 4.8 from 9 ratings.

### Do AIRVO 2 or ABG Expert have ads?

Neither AIRVO 2 nor ABG Expert shows ads.

### Which is updated more often, AIRVO 2 or ABG Expert?

AIRVO 2 ships an update every 13 months, and ABG Expert every 5 months. Most recently, AIRVO 2 was updated on October 26, 2026 and ABG Expert on October 20, 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.*