Comparison

HeatSafe vs Air Quality ◎

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

Head to head
About

HeatSafe

Features
Read full description

HeatSafe is a real-time heat stress management app built for outdoor and indoor work crews — and sports teams. Using hyper-local weather data, HeatSafe automatically calculates the current heat risk level and sends alerts to workers, athletes, and supervisors when thresholds are crossed — no personal weather station required. For workers: Get your current heat category, recommended work/rest cycles, and hydration reminders in your pocket. Log breaks and water intake with one tap; everything syncs automatically to your compliance record. For managers, foremen & coaches: See real-time risk status, break compliance, and hydration levels for every team member. One dashboard shows who's on track and who needs attention. Export audit-ready reports with a single click. Fully customizable to your operation: Start with NIOSH defaults (free tier) or build your own heat categories, work/rest ratios, and PPE offsets (paid plans) Input workload intensity and PPE type — the app adjusts safety recommendations automatically Set up your team, assign roles, and track acclimatization schedules for new and returning workers Align with your company's heat policy, state regulations, association requirements, or industry standards in minutes Ready for OSHA compliance & athletic association standards: HeatSafe is purpose-built to meet the proposed OSHA Heat Injury and Illness Prevention standard and state athletic association heat regulations. Your compliance data is logged automatically as work and training happen, so inspectors and compliance officers see a complete, timestamped record. Privacy Policy: https://getheatsafe.com/privacy-policy Terms of Use (EULA): https://getheatsafe.com/terms-of-use

About

Air Quality ◎

Get real-time air quality information for your city, including the main pollutant and its cause. Receive alerts for air quality changes and customize notifications based on your sensitivity profile. A widget provides at-a-glance updates without opening the app.

Highlights
  • Real-time AQI and pollutant concentration
  • Supports multiple international AQI scales
  • Weather factors explained
  • Global pollution map and city ranking
  • Customizable alerts
  • Personalized sensitivity profiles
  • Home screen widget
Features
Read full description

What you are breathing, at a glance. An index with no explanation is useless. Air Quality shows your city's level in real time, the pollutant pushing it up, the weather behind it, and one clear call: go out now, or wait until this evening. No account, no sign-up, no email address to hand over. THE INDEX, IN REAL TIME Your city's level, updated continuously, with the pollutant responsible and its concentration: PM2.5 and PM10 particulate matter, nitrogen dioxide, ozone, sulphur dioxide, carbon monoxide. When wildfire smoke drifts in, fine particles are what tell you first. YOUR COUNTRY'S OWN SCALE In the United States the app uses the AQI you already know, from 0 to 500. Travel, and it switches to the official scale of wherever you are: the European index, Canada's AQHI, the UK's DAQI, Korea's CAI, and the Japanese, Mexican, Australian and Brazilian scales. Nine scales in all, and you can force your own. THE WEATHER THAT EXPLAINS IT Wind disperses particles, heat manufactures ozone, rain washes the air. A discreet strip ties every move of the index to its cause, in one sentence. This is an air quality app, not a weather app: the weather is there to explain, never to take over the screen. MAP AND RANKING A pollution layer over the world map, monitoring stations where they exist, and a ranking of major cities so you can place your own. ALERTS THAT ACTUALLY WARN YOU A notification when the air degrades in one of your cities, and another when it is breathable again. You set the threshold, the app keeps watch. YOUR SENSITIVITY PROFILE Asthma, heart condition, young child, older adult, pregnancy, outdoor sport: tick what applies to you. The app then watches the pollutants that affect you first and warns you earlier, without ever altering the readings it shows. ON YOUR HOME SCREEN A widget shows your city's level without opening the app. YOUR DATA STAYS WITH YOU No account, no advertising profile built on your health. Your reading history is stored on your device. PREMIUM The free version gives you today's index, the map, the ranking, the widget and one tracked city. Premium adds: no ads, five-day forecasts, up to 50 cities, alerts, twelve months of history and CSV export of your readings. Monthly or yearly subscription — a seven-day free trial on the yearly plan — or a one-time lifetime purchase. Prices for your country are shown inside the app. Payment is charged to your Apple account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage and cancel them in your Apple account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ General terms: https://airquality.devolim.fr/en/terms.html Subscription terms: https://airquality.devolim.fr/en/subscription.html Privacy: https://airquality.devolim.fr/en/privacy.html Data: Copernicus / CAMS via Open-Meteo. Air Quality provides environmental information. It is not a medical device and does not replace the advice of a health professional.

Screenshots

HeatSafe4 screens
Air Quality ◎4 screens

Verdict

The call

The clearest difference is in-app purchases: Air Quality ◎ at none against HeatSafe's 7. HeatSafe's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On price, 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. HeatSafe sells 7 in-app purchases, starting at $4.99 per month. Air Quality ◎ asks for nothing beyond the download.

UpkeepUpdate frequency

HeatSafe ships an update every 9 days, Air Quality ◎ every 2 months. Both last shipped on October 31, 2026.

Scorecard3 real differences · 5 level
HeatSafe versus Air Quality ◎: the parameters behind the verdict, then further details
ParameterHeatSafeAir Quality ◎
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 9 days — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size39 MB75 MB
Age rating12+12+
DeveloperMATTHEW ALEXANDER,NASH MCMURTREYDevolim

In-app purchases

7 purchases

HeatSafe

Subscriptions7
  • HeatSafe Single Premium7 Days trial$4.991 Month
  • HeatSafe Company Sub - 5 Users7 Days trial$9.991 Month
  • HeatSafe - Coach Portal7 Days trial$9.991 Month
Show 4 more
  • Company HeatSafe - 10 Users$17.991 Month
  • HeatSafe Company 20 Users$29.991 Month
  • HeatSafe Company 50 Users$59.991 Month
  • HeatSafe Company 100 Users$99.991 Month
None

Air Quality ◎

No in-app purchases

Questions

Is HeatSafe free?
HeatSafe is free to download, with in-app purchases available.
Is Air Quality ◎ free?
Air Quality ◎ is free to download, with no in-app purchases.
Do HeatSafe or Air Quality ◎ have ads?
Air Quality ◎ shows ads; HeatSafe does not.
Which is updated more often, HeatSafe or Air Quality ◎?
HeatSafe ships an update every 9 days, and Air Quality ◎ every 2 months. Most recently, HeatSafe was updated on October 31, 2026 and Air Quality ◎ on October 31, 2026.

Other comparisons