Comparison

Local Haze vs AirPro AQI

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

Head to head
About

Local Haze

This app crowdsources outdoor air quality data from numerous global sensors, providing real-time readings and confidence ratings. It offers at-a-glance information on Apple Watch, phone widgets, and customizable notifications for significant air quality changes.

Highlights
  • Crowdsourced air quality data
  • Global sensor network
  • Sensor confidence ratings
  • Apple Watch integration
  • Phone widgets
  • Air quality notifications
  • EPA AQI display
Features
Read full description

Local Haze crowdsources outdoor air quality data from many different sources and delivers it to your iPhone and Apple Watch. In release 2.3, as a Local Haze subscriber, you can now get air quality readings “at a glance” on your Apple Watch, widgets on your phone, and notifications for a sensor where significant changes in air quality have been detected. About Local Haze Local Haze reports air quality data from a variety of sensors across six continents, including AirGradient, AirNow, PurpleAir, Sensor.Community and uRADMonitor. In addition to viewing current air quality conditions, using Local Haze allows you to share sensor maps displaying air quality readings anywhere in the world. The World Health Organization and the U.S. Environmental Protection Agency (EPA) have developed guidelines for safe air quality as impacted by chemical pollutants and particulate matter (PM). PM smaller than 10 micrometers poses problems because it can enter the bloodstream. Local Haze displays the level of smaller PM 2.5 particles, which pose the most significant health risk. Local Haze Apple Watch app If you have disabled Automatic App Install on your Apple Watch, you can follow these directions to manually install it: https://support.apple.com/en-ca/guide/watch/apd99e3c6a68/watchos Local Haze Widgets A Local Haze widget allows subscribers, at a glance, to see a snapshot of their favorite AQ sensor. A tap on the widget displays the Local Haze sensor details screen. For directions on how to add a widget, visit this page: https://localhaze.humanlogic.com/2023/07/22/adding-a-local-haze-widget/ Notifications in Local Haze To set a notification, subscribers can tap the bell icon on the sensor details screen. Notifications will be sent to your phone when the air quality changes. How Local Haze Displays Air Quality Data Local Haze displays the EPA’s Air Quality Index (AQI) and a confidence rating for each sensor reading. The confidence rating is a feature that is unique to Local Haze and depends on many factors, including sensor maintenance and data freshness. Each AQ sensor reading is displayed as a face icon according to the key below, with a badge on the lower right that represents a confidence rating: Green Face: Air quality is Good. Air quality is considered satisfactory, and air pollution poses little or no risk. Yellow Face: Air quality is Moderate. Air quality is acceptable. For some pollutants, there may 
be a moderate health concern. Orange Face: Air quality is Unhealthy for sensitive groups. The general public is not likely to be affected, but people with heart and lung disease, older adults, and children are at greater risk. Red Face: Air quality is Unhealthy Everyone may begin to experience some adverse health effects, and members of the sensitive groups may experience more serious effects. Black face mask with respirator: Air quality is Hazardous. Everyone may experience more serious health effects with possible emergency conditions. The entire population is likely to be affected. Note: The source for the above AQ index classification is from Air Quality Index (AQI) Basics - EPA: https://www.airnow.gov/aqi/aqi-basics/ The confidence rating badges are: Green badge with thumbs up: High confidence in the air sensor reading. Yellow badge with OK sign: OK confidence in the air sensor reading. Red badge with thumbs down: Low confidence in the air sensor reading. We hope you enjoy using Local Haze! If you have any feedback about Local Haze please email us at localhaze@humanlogic.com or visit https://localhaze.humanlogic.com/

About

AirPro AQI

This application connects to AirPro hardware to measure and track various particle sizes in the air. It provides detailed air quality data for users concerned about their environment.

Highlights
  • Measures 1um, 2um, 5um, 10um particles
  • Tracks air quality data
  • Connects to AirPro hardware
  • Provides detailed air quality readings
Features
Read full description

App connects to the AirPro hardware and allows users to measure and track air quality including 1um, 2um, 5um and 10um size particles.

Screenshots

Local Haze4 screens
AirPro AQI4 screens

Verdict

The call

The clearest difference is in-app purchases: AirPro AQI at none against Local Haze's 2. AirPro AQI also leads on rating (5.0 vs 4.6) and update cadence (monthly vs every 3 months). Local Haze's advantage is ratings volume (32 vs 1). On price, ads, device support and iOS requirement 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. Local Haze sells 2 in-app purchases, starting at $0.99 per month. AirPro AQI asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AirPro AQI holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Local Haze has 32 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Local Haze ships an update every 3 months, AirPro AQI monthly. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Local Haze versus AirPro AQI: the parameters behind the verdict, then further details
ParameterLocal HazeAirPro AQI
PriceFreeFree
Rating4.6 (32 ratings)5.0 (1 ratings) — better
Positive reviews78.9% of reviews—
Number of ratings32 — better1
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.616.1 — better
Further details — not scored
Size60 MB13 MB
Age rating4+4+
DeveloperHumanLogicPaul Dorsey

Customer experience

Local Haze

All ratings32 ratings
Positive84.4%
Neutral15.6%
Negative0.0%
Written reviews19 reviews
Positive78.9%
Neutral21.1%
Negative0.0%

AirPro AQI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Local Haze

Subscriptions2
  • All Access - Monthly3 Days trial$0.991 Month
  • All Access - Annual3 Days trial$9.991 Year
None

AirPro AQI

No in-app purchases

Questions

Is Local Haze free?
Local Haze is free to download, with in-app purchases available.
Is AirPro AQI free?
AirPro AQI is free to download, with no in-app purchases.
Which has better reviews, Local Haze or AirPro AQI?
AirPro AQI is rated higher. Local Haze averages 4.6 out of 5 from 32 ratings, while AirPro AQI averages 5.0 from 1 ratings.
Do Local Haze or AirPro AQI have ads?
Neither Local Haze nor AirPro AQI shows ads.
Which is updated more often, Local Haze or AirPro AQI?
Local Haze ships an update every 3 months, and AirPro AQI monthly. Most recently, Local Haze was updated on November 3, 2026 and AirPro AQI on November 3, 2026.

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