Comparison

Haze@SG vs Nebulo

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

Head to head
About

Haze@SG

Quickly check Singapore's air quality with hourly AQI, PM2.5, and 24-hour PSI readings. Understand what the levels mean and receive alerts to stay informed about haze conditions.

Highlights
  • Hourly AQI readings
  • Hourly PM2.5 levels
  • 24-hour PSI
  • Clear indicators
  • Share haze levels
  • Alerts
Features
Read full description

Haze@SG helps you quickly check air quality levels across Singapore. Stay updated with hourly AQI and PM2.5 readings, along with the 24-hour PSI, so you can make informed decisions throughout the day. The app is designed to be simple, fast, and easy to read at a glance. NEW! Local Air Quality Stations Explore additional AQI readings from local monitoring stations across Singapore, updated regularly. Find stations near you, see their distance from your location, and check the latest air quality conditions in different neighbourhoods. Maintained since 2013, Haze@SG continues to provide reliable haze updates with a clean and focused experience. Features: * 1-hour AQI readings across all regions * 1-hour PM2.5 levels for current conditions * 24-hour PSI based on NEA data * Local AQI readings from additional monitoring stations across Singapore * Find nearby monitoring stations using your location * Clear indicators to understand what the readings mean * Latest haze news and weather forecasts * Share current haze levels with friends and family * Alerts to stay informed Official regional air quality readings are sourced from NEA, while additional local station readings are provided by the World Air Quality Index (WAQI) project. PM2.5 readings reflect short-term air quality and may change throughout the day depending on weather conditions and haze levels. Haze@SG is independently developed and maintained. Your support helps cover server costs and ongoing improvements. If you find the app useful, you can support its continued development through a subscription. As a subscriber, you also enjoy an ad-free experience. Feedback and suggestions are welcome. You can reach us via email at support@hosaystudios.com or through the app. -------------------------------- Subscription Information Payment will be charged to your Apple ID account at confirmation of purchase. Your account will be charged for renewal within 24 hours prior to the end of the current period. Auto-renewal can be turned off at any time in your Apple ID account settings after purchase. No cancellation of the current subscription is allowed during an active subscription period. Subscription price: SGD 1.99 per month SGD 19.99 per year Prices may vary by country. Privacy Policy: http://hosaystudios.com/privacy.html Terms of Use: http://hosaystudios.com/terms.html -------------------------------- Note: This app is not affiliated with NEA. Data is sourced from publicly available information, and any inaccuracies should not be attributed to NEA.

About

Nebulo

This app provides real-time air quality information based on the nearest weather station. It uses US EPA AQI Standards for reliable data, covering regions like Singapore, Malaysia, Thailand, and Hong Kong.

Highlights
  • Real-time air quality data
  • Nearest weather station reports
  • US EPA AQI Standards
  • Support for Singapore, Malaysia, Thailand, Hong Kong
  • Beautiful, minimalist interface
Features
Read full description

Nebulo is a beautiful way to know the air that's choking you without choking your eyes. Now with support for Singapore, Malaysia, Thailand and Hong Kong, you can know the air around you based on the nearest weather station. Just open the app, and let it do it's magic! All of our data conforms to the US EPA AQI Standards, so you can rest assure we're giving you the best and most reliable data when you need it.

Screenshots

Haze@SG4 screens
Nebulo3 screens

Verdict

The call

The clearest difference is rating: Haze@SG at 5.0 against Nebulo's 4.0. Haze@SG also leads on review sentiment (100% vs 75%) and update cadence (every 9 days vs every 4 weeks). Nebulo's advantage is in-app purchases (none vs 2) and ads (none vs shown). 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. Haze@SG sells 2 in-app purchases, starting at $0.99 per month. Nebulo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Haze@SG holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Haze@SG has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Haze@SG's written reviews are positive against 75% of Nebulo's.

UpkeepUpdate frequency

Haze@SG ships an update every 9 days, Nebulo every 4 weeks. Both last shipped on November 1, 2026.

Scorecard7 real differences · 3 level
Haze@SG versus Nebulo: the parameters behind the verdict, then further details
ParameterHaze@SGNebulo
PriceFreeFree
Rating5.0 (11 ratings) — better4.0 (1 ratings)
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings11 — better1
Update frequencyEvery 9 days — betterEvery 4 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS15.615.6
Further details — not scored
Size67 MB12 MB
Age rating4+4+
DeveloperHosay StudiosUndertide LLP

Customer experience

Haze@SG

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Nebulo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

2 purchases

Haze@SG

Subscriptions2
  • Haze@SG Pro Monthly$0.991 Month
  • Haze@SG Pro Yearly$12.991 Year
None

Nebulo

No in-app purchases

Questions

Is Haze@SG free?
Haze@SG is free to download, with in-app purchases available.
Is Nebulo free?
Nebulo is free to download, with no in-app purchases.
Which has better reviews, Haze@SG or Nebulo?
Haze@SG is rated higher. Haze@SG averages 5.0 out of 5 from 11 ratings, while Nebulo averages 4.0 from 1 ratings.
Do Haze@SG or Nebulo have ads?
Haze@SG shows ads; Nebulo does not.
Which is updated more often, Haze@SG or Nebulo?
Haze@SG ships an update every 9 days, and Nebulo every 4 weeks. Most recently, Haze@SG was updated on November 1, 2026 and Nebulo on November 1, 2026.

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