# 홍수알리미 vs 한강 가즈아

The clearest difference is update cadence: 홍수알리미 at every 5 months against 한강 가즈아's every 29 months. 홍수알리미 also leads on device support (3 vs 1) and iOS requirement (9.0 vs 16.4). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

홍수알리미 ships an update every 5 months, 한강 가즈아 every 29 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 홍수알리미 | 한강 가즈아 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6478441625/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 94.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 29 months |
| Monetization | — | Free |
| Size | 3 MB | 38 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [한강홍수통제소](https://appshunter.io/developer/578871388) | [Kilho Oh](https://appshunter.io/developer/1191040260) |

## What reviewers say

### 홍수알리미

[App page](https://appshunter.io/ios/app/id946789489)

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

**In-app purchases:** none


### 한강 가즈아

[App page](https://appshunter.io/ios/app/id6478441625)

This app provides water temperature information based on your current location and nearby measurement stations. It offers real-time data to help you find the most relevant water temperature information.

**Highlights:** Location-based water temperature, Nearby measurement station data, Real-time information, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is 홍수알리미 free?

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

### Is 한강 가즈아 free?

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

### Do 홍수알리미 or 한강 가즈아 have ads?

Neither 홍수알리미 nor 한강 가즈아 shows ads.

### Which is updated more often, 홍수알리미 or 한강 가즈아?

홍수알리미 ships an update every 5 months, and 한강 가즈아 every 29 months. Most recently, 홍수알리미 was updated on September 24, 2026 and 한강 가즈아 on September 23, 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.*