# AirQualityMeter vs DustMap

The clearest difference is in-app purchases: AirQualityMeter at none against DustMap's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DustMap sells 4 one-off in-app purchases. AirQualityMeter asks for nothing beyond the download.

AirQualityMeter ships an update every 6 months, DustMap every 5 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | AirQualityMeter | DustMap |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 63 MB |
| Requires iOS | 16.6 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Yuta Endo](https://appshunter.io/developer/1621719139) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### AirQualityMeter

[App page](https://appshunter.io/ios/app/airqualitymeter/id1660451275)

This app provides real-time air quality measurements and forecasts up to 24 hours in advance. It helps users manage their physical condition and prepare for allergies by notifying them of pollutants like PM2.5 and PM10. Location services enable automatic weather data acquisition for your current area.

**Highlights:** Real-time air pollutant notifications (PM2.5, PM10), 24-hour air pollution level forecast, Global coverage, Automatic location-based weather data, Allergy countermeasure information

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### DustMap

[App page](https://appshunter.io/ios/app/dustmap/id6744262672)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| Coffee (Large) | $1.99 | one-time |
| システム改善応援費 | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## Frequently asked questions

### Is AirQualityMeter free?

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

### Is DustMap free?

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

### Do AirQualityMeter or DustMap have ads?

Both AirQualityMeter and DustMap show ads.

### Which is updated more often, AirQualityMeter or DustMap?

AirQualityMeter ships an update every 6 months, and DustMap every 5 months. Most recently, AirQualityMeter was updated on October 18, 2026 and DustMap on October 8, 2026.

---

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