# Dustlight vs WatchGas

Dustlight and WatchGas are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dustlight ships an update every 5 weeks, WatchGas every 3 weeks. The most recent releases landed on September 23, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Dustlight | WatchGas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watchgas/id6479701347/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 109 MB | 49 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Latai](https://appshunter.io/developer/1702237370) | [WatchGas](https://appshunter.io/developer/1736959878) |

## What reviewers say

### Dustlight

[App page](https://appshunter.io/ios/app/dustlight/id6475342016)

This app monitors airborne particles in real-time, alerting users to dangerous levels of fine dust. It offers customizable alerts, data analysis, and cloud storage for health protection in industrial and construction environments.

**Highlights:** Real-time dust monitoring, Customizable alerts and thresholds, Cloud data storage and backup, Detailed data analysis on smartphone, Flexible operating modes, Over-the-air device updates

**Features:** Vision Pro support

**In-app purchases:** none


### WatchGas

[App page](https://appshunter.io/ios/app/watchgas/id6479701347)

This application allows users to manage and configure their WatchGas SST1 and SST4 devices. It provides essential tools for device setup and operational control.

**Highlights:** Device management, Device configuration, SST1 support, SST4 support, Compliance tools

**In-app purchases:** none


## Frequently asked questions

### Is Dustlight free?

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

### Is WatchGas free?

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

### Do Dustlight or WatchGas have ads?

Neither Dustlight nor WatchGas shows ads.

### Which is updated more often, Dustlight or WatchGas?

Dustlight ships an update every 5 weeks, and WatchGas every 3 weeks. Most recently, Dustlight was updated on September 23, 2026 and WatchGas on September 6, 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.*