AirNotis vs XGas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AirNotis
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.
- 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
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※ You can use the Airnotis App to control your Airnotis ■ Check 6 types of air quality all together: Airnotis can measure CO2, CO, fine dust, ultrafine dust, TVOC, temperature/humidity accurately. ■ Compact and portable: Airnotis can be used in the office, classroom, car, home, camping, anywhere. ■ Exclusive application features · Real-time air quality check (CO2, CO, fine dust, ultrafine dust, TVOC, temperature, humidity) · Airnotis can be connected to multiple smartphones and one smartphone can be connected to multiple Airnotis · Change device name (for example: by location) · Set notification (vibration, alarm, etc.) · Language Settings (Korean/English/Japanese/Chinese) · Screen settings (power saving mode, device theme, etc.) · Temperature conversion (℃/℉) · Change Environmental Standards (WHO/Korea/USA)
XGas
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It is an app that allows you to view gas information, temperature, humidity, and air pressure by connecting to the XMG100 gas device through Bluetooth. You can view the data by graphing the stored data on the calendar screen. You can change the alarm ON/OFF, sound, and vibration on the settings screen.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | AirNotis | XGas |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (5 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 39 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | BLUEFEEL Co., Ltd. | Chois Technology |
In-app purchases
AirNotis
No in-app purchases
XGas
No in-app purchases
