Comparison

Airthings vs X

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Airthings

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
Read full description

Breathe better with Airthings! Smart air quality monitors & purifiers you can trust. Shift your state of being with Airthings. Our products can help you improve indoor air quality leading to better focus, calming of allergies, and enhancement of sleep while ensuring an overall more healthy home. It features: • Quick and easy device setup • AirGlimpse™: Color-coded indicators give you at-a-glance information about your air quality • Access to the detailed graphs to help you track and find trends over time • Set focuses for your devices - air quality data broken down into high engagement problems that you care about • Control your Renew air purifier from anywhere • 5-day pollen forecast for your location with actionable advice • Notifications inform you of poor air quality and suggest ways to improve it, fast • Tips for addressing common indoor air quality problems and how to make the most of your device • Recommendations on the best Airthings monitor for your needs • Subscribe to Air Reports - We’ll send you a monthly update which summarises all the sensor data for your location. This app supports all Airthings products. If you have questions about using the app or any of our monitors, please refer to the Airthings Help Center or contact support@airthings.com.

About

X

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
Read full description

X-Sense Home Security makes connecting all smart devices in your house a breeze, allowing you to check your home's status at any time, no matter where you are. You can remotely set up and test devices to ensure they are working properly. In case of danger, the app will send you push notifications, enabling you to react quickly. You can also share smart devices with your family members, making it possible for them to keep an eye on your home's security as well. Meanwhile, our Protect+ Plan is available in the United States. It provides 24/7 fire dispatch to fully protect your life, family, and property. Learn more about Protect+ Plan in the app.

Screenshots

Airthings4 screens
X4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
Airthings versus X: the parameters behind the verdict, then further details
ParameterAirthingsX
PriceFreeFree
Rating4.4 (3K ratings)4.8 (3.3K ratings) — better
Positive reviews33.3% of reviews91.0% of reviews — better
Number of ratings3K3.3K — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.612.0 — better
Further details — not scored
Size102 MB326 MB
Age rating4+12+
DeveloperAirthings ASAX-sense USA LLC

Customer experience

Airthings

All ratings3,005 ratings
Positive83.9%
Neutral3.4%
Negative12.7%
Written reviews450 reviews
Positive33.3%
Neutral9.1%
Negative57.6%

X

All ratings3,278 ratings
Positive97.9%
Neutral0.9%
Negative1.2%
Written reviews901 reviews
Positive91.0%
Neutral3.2%
Negative5.8%

User reviews

Airthings

From 3K App Store ratings

What we love

  • 🚀 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

Room to improve

  • 🐛 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

X

From 3.3K App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Airthings

Reported bugs

6 issues
  • 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
Show 1 more
  • Unexplained battery drain on devices

Requested features

6 requests
  • 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
Show 1 more
  • Improve syncing and connectivity reliability

X

Reported bugs

3 issues
  • Devices going offline unexpectedly
  • Firmware update failures
  • Inconsistent sensor behavior

Requested features

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

In-app purchases

None

Airthings

No in-app purchases

None

X

No in-app purchases

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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