# AIRVO 2 vs VAS

The clearest difference is rating: VAS at 5.0 against AIRVO 2's 4.6. VAS also leads on iOS requirement (9.0 vs 14.0). AIRVO 2's advantage is ratings volume (8 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

VAS holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: AIRVO 2 has 8 ratings behind it against 1, so its average is the more settled of the two.

AIRVO 2 ships an update every 13 months, VAS every 22 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | AIRVO 2 | VAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (8 ratings)](https://appshunter.io/ios/app/airvo-2/id734808115/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vas-visual-analog-scale/id1241222362/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 22 months |
| Monetization | Free | Free |
| Size | 61 MB | 13 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Fisher & Paykel Healthcare Limited](https://appshunter.io/developer/634784377) | [Herve Kasparian](https://appshunter.io/developer/1232851521) |

## 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


### VAS

[App page](https://appshunter.io/ios/app/vas-visual-analog-scale/id1241222362)

This tool provides a reliable method for assessing pain levels. It's a free, ad-free application designed for easy access to pain evaluation, ensuring accuracy and validity.

**Highlights:** Reliable pain evaluation, Simple and free to use, No advertisements, Pocket-sized accessibility, Scientifically evaluated accuracy

**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 VAS free?

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

### Which has better reviews, AIRVO 2 or VAS?

VAS is rated higher. AIRVO 2 averages 4.6 out of 5 from 8 ratings, while VAS averages 5.0 from 1 ratings.

### Do AIRVO 2 or VAS have ads?

Neither AIRVO 2 nor VAS shows ads.

### Which is updated more often, AIRVO 2 or VAS?

AIRVO 2 ships an update every 13 months, and VAS every 22 months. Most recently, AIRVO 2 was updated on October 9, 2026 and VAS on October 2, 2026.

---

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