# 호우호우 vs PM10 Tracker (미세먼지알림이)

The clearest difference is in-app purchases: 호우호우 at none against PM10 Tracker (미세먼지알림이)'s 2. 호우호우 also leads on iOS requirement (8.0 vs 14.0). PM10 Tracker (미세먼지알림이)'s advantage is review sentiment (88% vs 57%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PM10 Tracker (미세먼지알림이) sells 2 in-app purchases, starting at $0.99 per 3 months. 호우호우 asks for nothing beyond the download.

호우호우 ships an update fortnightly, PM10 Tracker (미세먼지알림이) every 9 days. Both last shipped on November 11, 2026.

## The numbers

| Metric | 호우호우 | PM10 Tracker (미세먼지알림이) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (15 ratings)](https://appshunter.io/ios/app/pm10-tracker/id991670217/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | 57.1% of reviews | **88.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 79 MB | 44 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [YONG SANG LEE](https://appshunter.io/developer/943335101) | [Won Cheul Seok](https://appshunter.io/developer/917577689) |

## What reviewers say

### 호우호우

[App page](https://appshunter.io/ios/app/id943335102)

Get real-time air quality and weather forecasts with animated visuals and personalized alerts. Compare daily weather, receive rain notifications, and view user-generated weather reports on a social map. Enjoy a unique, character-driven weather experience.

**Highlights:** Real-time air quality and dust forecasts, Animated weather information, Daily weather comparison, Personalized rain alerts, Weather widgets, Social map for user weather reports, Weather condition alerts (wind, rain, heat, cold)

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

**In-app purchases:** none


### PM10 Tracker (미세먼지알림이)

[App page](https://appshunter.io/ios/app/pm10-tracker/id991670217)

This app provides real-time air quality information for South Korea, including PM10, PM2.5, and O3 levels. It offers alerts for poor conditions and features optimized GPS battery usage and Apple Watch complications. Subscriptions remove ads and unlock unlimited tracking.

**Highlights:** Real-time PM10/PM2.5/O3 map for South Korea, Alerts for 'bad' air quality conditions, Minimized GPS battery usage, Apple Watch complications, Siri shortcuts for accessibility, Subscription for ad-free experience

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Convenience Kits | $0.99 | per 3 months |
| Convenience Kits | $2.49 | per year |


## Frequently asked questions

### Is 호우호우 free?

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

### Is PM10 Tracker (미세먼지알림이) free?

PM10 Tracker (미세먼지알림이) is free to download, with in-app purchases available.

### Do 호우호우 or PM10 Tracker (미세먼지알림이) have ads?

Neither 호우호우 nor PM10 Tracker (미세먼지알림이) shows ads.

### Which is updated more often, 호우호우 or PM10 Tracker (미세먼지알림이)?

호우호우 ships an update fortnightly, and PM10 Tracker (미세먼지알림이) every 9 days. Most recently, 호우호우 was updated on November 11, 2026 and PM10 Tracker (미세먼지알림이) on November 11, 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.*