# Airthings vs X

The clearest difference is review sentiment: X at 91% against Airthings's 33%. X also leads on rating (4.8 vs 4.4) and monetization model (free vs free with in-app purchases). On price, ratings volume, update cadence 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.

X holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 3K and 3.3K respectively. Written reviews point the same way: 33% of Airthings's written reviews are positive against 91% of X's.

Airthings ships an update fortnightly, X every 3 weeks. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Airthings | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (3K ratings)](https://appshunter.io/ios/app/airthings/id1560329275/reviews) | **[4.8 (3.3K ratings)](https://appshunter.io/ios/app/x-sense-home-security/id1568666708/reviews)** |
| Number of ratings | 3K | **3.3K** |
| Positive reviews | 33.3% of reviews | **91.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 102 MB | 326 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Airthings ASA](https://appshunter.io/developer/1101077902) | [X-sense USA LLC](https://appshunter.io/developer/1568666710) |

## What reviewers say

### Airthings

[App page](https://appshunter.io/ios/app/airthings/id1560329275)

Monitor and improve your indoor air quality with smart devices. Get real-time insights, track trends, and receive actionable advice to enhance focus, reduce allergies, and sleep better. Control your air purifier and stay informed about pollen forecasts.

**Highlights:** Quick device setup, At-a-glance air quality indicators, Detailed trend tracking, Air purifier remote control, 5-day pollen forecast, Air quality notifications, Personalized air reports

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple to understand and setup
- 🚀 Intuitive and easy to use app
- 🚀 Efficient and fast
- 🚀 Provides great information on air quality
- 🚀 Accurate and reliable sensor readings

**What reviewers complain about**

- 🐛 App has connectivity issues, often fails to sync
- 🐛 App is buggy and has many errors
- 🐛 Inaccurate or inconsistent sensor readings
- 🐛 Difficult to set up and connect devices
- 🐛 Lack of customization options for thresholds and notifications

**Reported bugs**

- App crashes frequently
- Unable to add new devices or accounts
- Incorrect color coding and data display
- Delayed or missing sensor data updates
- Bluetooth connectivity issues

**Requested features**

- Add HomeKit integration
- Allow custom thresholds and notifications
- Improve data visualization and historical trending
- Add more detailed information on air quality issues and remedies
- Provide an iPad-optimized version of the app


### X

[App page](https://appshunter.io/ios/app/x-sense-home-security/id1568666708)

Easily connect and manage smart home security devices. Receive instant alerts for potential dangers and remotely monitor your home's status from anywhere. Share device access with family for collective peace of mind.

**Highlights:** Remote device setup and testing, Real-time push notifications for alerts, Share device access with family, 24/7 fire dispatch (Protect+ Plan), Monitor home status remotely

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy setup
- 🔒 Reliable connectivity
- 👍 Convenient remote monitoring
- 🚀 Straightforward installation
- 👍 Helpful app

**What reviewers complain about**

- 🔋 Battery recharging issues
- 🐛 Connectivity problems
- 🐛 Unreliable notifications
- 🔒 Limited user access
- 🐛 Sensor offline issues

**Reported bugs**

- Devices going offline unexpectedly
- Firmware update failures
- Inconsistent sensor behavior

**Requested features**

- Ability to test alarms from app
- Option to silence alarms remotely
- Support for multiple user logins
- Customizable notification tones
- Expanded location management


## Frequently asked questions

### Is Airthings free?

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

### Is X free?

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

### Which has better reviews, Airthings or X?

X is rated higher. Airthings averages 4.4 out of 5 from 3K ratings, while X averages 4.8 from 3.3K ratings.

### Do Airthings or X have ads?

Neither Airthings nor X shows ads.

### Which is updated more often, Airthings or X?

Airthings ships an update fortnightly, and X every 3 weeks. Most recently, Airthings was updated on September 22, 2026 and X on September 24, 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.*