# AirNotis vs XGas

The clearest difference is update cadence: XGas at every 3 weeks against AirNotis's every 2 months. 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.

AirNotis ships an update every 2 months, XGas every 3 weeks. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AirNotis | XGas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/airnotis/id1668045716/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 39 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BLUEFEEL Co., Ltd.](https://appshunter.io/developer/1668042748) | [Chois Technology](https://appshunter.io/developer/412843396) |

## What reviewers say

### AirNotis

[App page](https://appshunter.io/ios/app/airnotis/id1668045716)

Monitor six types of air quality, including CO2, fine dust, and temperature, in real-time. This portable device and its exclusive app allow for easy connection to multiple smartphones and offer customizable notifications and settings for various environments.

**Highlights:** Real-time air quality monitoring, Measures CO2, CO, fine dust, ultrafine dust, TVOC, temp/humidity, Compact and portable for any location, Connect to multiple smartphones, Customizable notifications and settings, Supports multiple environmental standards

**Features:** macOS Compatibility

**In-app purchases:** none


### XGas

[App page](https://appshunter.io/ios/app/xgas/id6448897327)

**In-app purchases:** none


## Frequently asked questions

### Is AirNotis free?

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

### Is XGas free?

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

### Do AirNotis or XGas have ads?

Neither AirNotis nor XGas shows ads.

### Which is updated more often, AirNotis or XGas?

AirNotis ships an update every 2 months, and XGas every 3 weeks. Most recently, AirNotis was updated on November 3, 2026 and XGas on October 25, 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.*