# 河川水位 vs EQMonitor 地震速報

The clearest difference is review sentiment: EQMonitor 地震速報 at 88% against 河川水位's 14%. EQMonitor 地震速報 also leads on ads (none vs shown) and update cadence (every 11 days vs every 5 weeks). 河川水位's advantage is iOS requirement (15.6 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 河川水位 sells 4 one-off in-app purchases and EQMonitor 地震速報 sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

河川水位 ships an update every 5 weeks, EQMonitor 地震速報 every 11 days. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 河川水位 | EQMonitor 地震速報 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/eqmonitor/id6447546703/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 14.3% of reviews | **87.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 73 MB | 171 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [hidehiko aihara](https://appshunter.io/developer/1178520609) | [Ryotaro Onoue](https://appshunter.io/developer/1681712231) |

## What reviewers say

### 河川水位

[App page](https://appshunter.io/ios/app/id1595112434)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| 開発者応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


### EQMonitor 地震速報

[App page](https://appshunter.io/ios/app/eqmonitor/id6447546703)

Receive timely earthquake and urgent earthquake early warning notifications for Japan. View past earthquake history with a detailed database and see real-time P-wave and S-wave predictions. Access the Strong Motion Monitor for visual earthquake data.

**Highlights:** Earthquake and early warning notifications, Customizable notification conditions by region, View past earthquake history (since 1919), Real-time display of urgent earthquake warnings, P-wave/S-wave arrival and epicenter display, Access to Strong Motion Monitor

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EQMonitor Pro | $1.99 | per month |
| コーヒー | $0.49 | one-time |
| エナジードリンクセット | $1.99 | one-time |
| 美味しい牛肉 | $5.99 | one-time |
| うな重 | $19.99 | one-time |


## Frequently asked questions

### Is 河川水位 free?

河川水位 is free to download, with in-app purchases available.

### Is EQMonitor 地震速報 free?

EQMonitor 地震速報 is free to download, with in-app purchases available.

### Do 河川水位 or EQMonitor 地震速報 have ads?

河川水位 shows ads; EQMonitor 地震速報 does not.

### Which is updated more often, 河川水位 or EQMonitor 地震速報?

河川水位 ships an update every 5 weeks, and EQMonitor 地震速報 every 11 days. Most recently, 河川水位 was updated on October 25, 2026 and EQMonitor 地震速報 on October 27, 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.*