# SG Air vs Nebulo

The clearest difference is rating: Nebulo at 4.0 against SG Air's 3.0. Nebulo also leads on in-app purchases (none vs 1) and ads (none vs shown). SG Air's advantage is iOS requirement (13.0 vs 15.6). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. SG Air sells 1 one-off in-app purchase. Nebulo asks for nothing beyond the download.

Nebulo holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 80% of SG Air's written reviews are positive against 75% of Nebulo's, so the app with the better star average is not the one people write more warmly about.

SG Air ships an update every 3 weeks, Nebulo every 4 weeks. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | SG Air | Nebulo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/sg-air/id881004442/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/nebulo/id896360158/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | **80.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 22 MB | 12 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sim Ruenn Kang](https://appshunter.io/developer/434116446) | [Undertide LLP](https://appshunter.io/developer/896360161) |

## What reviewers say

### 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 |


### Nebulo

[App page](https://appshunter.io/ios/app/nebulo/id896360158)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SG Air free?

SG Air 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, SG Air or Nebulo?

Nebulo is rated higher. SG Air averages 3.0 out of 5 from 2 ratings, while Nebulo averages 4.0 from 1 ratings.

### Do SG Air or Nebulo have ads?

SG Air shows ads; Nebulo does not.

### Which is updated more often, SG Air or Nebulo?

SG Air ships an update every 3 weeks, and Nebulo every 4 weeks. Most recently, SG Air was updated on November 6, 2026 and Nebulo on November 1, 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.*