# P2P地震情報 モバイル vs 河川カメラ

The clearest difference is in-app purchases: P2P地震情報 モバイル at none against 河川カメラ's 4. P2P地震情報 モバイル also leads on ads (none vs shown) and review sentiment (50% vs 24%). 河川カメラ's advantage is update cadence (every 2 weeks vs every 7 months). On price and device support there is nothing between them.

Both are free to download. 河川カメラ sells 4 one-off in-app purchases. P2P地震情報 モバイル asks for nothing beyond the download.

P2P地震情報 モバイル ships an update every 7 months, 河川カメラ every 2 weeks. The most recent releases landed on October 9, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | P2P地震情報 モバイル | 河川カメラ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/river/id1566760183/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **50.0% of reviews** | 24.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 110 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Yamaguchi](https://appshunter.io/developer/1457443046) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### P2P地震情報 モバイル

[App page](https://appshunter.io/ios/app/p2p/id1457443047)

Receive real-time earthquake and tsunami alerts from the Japan Meteorological Agency. Share your own "shook!" reports with other users, which are then mapped. Get push notifications for instant updates and review past information.

**Highlights:** Earthquake and tsunami alerts, User-shared shaking reports, Real-time mapping of reports, Push notifications, Historical data view

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

**In-app purchases:** none


### 河川カメラ

[App page](https://appshunter.io/ios/app/river/id1566760183)

Access real-time river conditions and weather forecasts across Japan. View over 10,000 river locations on a map and check detailed precipitation, temperature, and snow data. Stay informed about weather changes to prepare for heavy rain and other natural events.

**Highlights:** Real-time river information map, Over 10,000 river locations, Live camera stills of rivers, Automatic and manual data updates, Detailed weather forecasts, Rainfall intensity visualization, Favorite locations

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

**In-app purchases (4)**

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


## Frequently asked questions

### Is P2P地震情報 モバイル free?

P2P地震情報 モバイル is free to download, with no in-app purchases.

### Is 河川カメラ free?

河川カメラ is free to download, with in-app purchases available.

### Do P2P地震情報 モバイル or 河川カメラ have ads?

河川カメラ shows ads; P2P地震情報 モバイル does not.

### Which is updated more often, P2P地震情報 モバイル or 河川カメラ?

P2P地震情報 モバイル ships an update every 7 months, and 河川カメラ every 2 weeks. Most recently, P2P地震情報 モバイル was updated on October 9, 2026 and 河川カメラ on October 19, 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.*