# 홍수알리미 vs AIoT

The clearest difference is update cadence: AIoT at every 5 days against 홍수알리미's every 5 months. On price, ads, in-app purchases and device support 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, AIoT every 5 days. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 홍수알리미 | AIoT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 94.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 3 MB | 63 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [한강홍수통제소](https://appshunter.io/developer/578871388) | [DATS Inc.](https://appshunter.io/developer/1747227064) |

## What reviewers say

### 홍수알리미

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

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

**In-app purchases:** none


### AIoT

[App page](https://appshunter.io/ios/app/aiot-based-flood-warning/id6670195693)

**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 AIoT free?

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

### Do 홍수알리미 or AIoT have ads?

Neither 홍수알리미 nor AIoT shows ads.

### Which is updated more often, 홍수알리미 or AIoT?

홍수알리미 ships an update every 5 months, and AIoT every 5 days. Most recently, 홍수알리미 was updated on October 26, 2026 and AIoT on October 22, 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.*