# SG Air vs SinEnvironment

The clearest difference is in-app purchases: SinEnvironment at none against SG Air's 1. SinEnvironment also leads on ads (none vs shown). SG Air's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 16.1). On price there is nothing between them.

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

## The numbers

| Metric | SG Air | SinEnvironment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sg-air/id881004442/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 3 MB |
| Requires iOS | **13.0** | 16.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sim Ruenn Kang](https://appshunter.io/developer/434116446) | [Hung Dang](https://appshunter.io/developer/1523869579) |

## 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 |


### SinEnvironment

[App page](https://appshunter.io/ios/app/sinenvironment/id6505028362)

**In-app purchases:** none


## Frequently asked questions

### Is SG Air free?

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

### Is SinEnvironment free?

SinEnvironment is free to download, with no in-app purchases.

### Do SG Air or SinEnvironment have ads?

SG Air shows ads; SinEnvironment does not.

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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.*