# Haze@SG vs SG Air

The clearest difference is rating: Haze@SG at 5.0 against SG Air's 3.0. Haze@SG also leads on review sentiment (100% vs 80%) and update cadence (every 9 days vs every 3 weeks). SG Air's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Haze@SG sells 2 in-app purchases, starting at $0.99 per month and SG Air sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Haze@SG holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Haze@SG has 11 ratings behind it against 2, 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 80% of SG Air's.

Haze@SG ships an update every 9 days, SG Air every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Haze@SG | SG Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/hazesg/id663816616/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/sg-air/id881004442/reviews) |
| Number of ratings | **11** | 2 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 67 MB | 22 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hosay Studios](https://appshunter.io/developer/599398754) | [Sim Ruenn Kang](https://appshunter.io/developer/434116446) |

## What reviewers say

### Haze@SG

[App page](https://appshunter.io/ios/app/hazesg/id663816616)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Haze@SG Pro Monthly | $0.99 | per month |
| Haze@SG Pro Yearly | $12.99 | per year |


### SG Air

[App page](https://appshunter.io/ios/app/sg-air/id881004442)

Access real-time and historical air quality data for Singapore, including PSI, AQI, and various pollutant levels. Receive hourly notifications for hazy conditions and view a haze map with hotspot locations. Contribute to crowdsourced reports and photos.

**Highlights:** 1-hr PSI/AQI Widget, Hourly haze notifications, Haze map with wind and hotspots, 24-hour data line charts, Crowdsourced air quality reports, SG Air Camera access

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Banner | $3.99 | one-time |


## Frequently asked questions

### Is Haze@SG free?

Haze@SG is free to download, with in-app purchases available.

### Is SG Air free?

SG Air is free to download, with in-app purchases available.

### Which has better reviews, Haze@SG or SG Air?

Haze@SG is rated higher. Haze@SG averages 5.0 out of 5 from 11 ratings, while SG Air averages 3.0 from 2 ratings.

### Do Haze@SG or SG Air have ads?

Both Haze@SG and SG Air show ads.

### Which is updated more often, Haze@SG or SG Air?

Haze@SG ships an update every 9 days, and SG Air every 3 weeks. Most recently, Haze@SG was updated on October 26, 2026 and SG Air on October 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.*