# Haze@SG vs Nebulo

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.

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.

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.

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

## The numbers

| Metric | Haze@SG | Nebulo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/hazesg/id663816616/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/nebulo/id896360158/reviews) |
| Number of ratings | **11** | 1 |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 67 MB | 12 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hosay Studios](https://appshunter.io/developer/599398754) | [Undertide LLP](https://appshunter.io/developer/896360161) |

## 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 |


### 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 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*