# インフルエンザ警戒計 vs 津波

The clearest difference is review sentiment: インフルエンザ警戒計 at 64% against 津波's 0%. インフルエンザ警戒計 also leads on in-app purchases (none vs 4). 津波's advantage is update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 津波 sells 4 one-off in-app purchases. インフルエンザ警戒計 asks for nothing beyond the download.

インフルエンザ警戒計 ships an update every 5 months, 津波 every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | インフルエンザ警戒計 | 津波 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **64.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 84 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Izaki](https://appshunter.io/developer/511591595) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### インフルエンザ警戒計

[App page](https://appshunter.io/ios/app/id567745994)

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

**In-app purchases:** none


### 津波

[App page](https://appshunter.io/ios/app/tsunami/id1615362492)

This app displays tsunami observation data and seismic intensity information. It provides details about earthquakes, including time, epicenter, intensity, and magnitude. It also shows tsunami observation data.

**Highlights:** Tsunami observation data, Seismic intensity information, Earthquake details (time, epicenter, magnitude), Real-time updates, User feedback integration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| アプリケーション開発者への応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## Frequently asked questions

### Is インフルエンザ警戒計 free?

インフルエンザ警戒計 is free to download, with no in-app purchases.

### Is 津波 free?

津波 is free to download, with in-app purchases available.

### Do インフルエンザ警戒計 or 津波 have ads?

Both インフルエンザ警戒計 and 津波 show ads.

### Which is updated more often, インフルエンザ警戒計 or 津波?

インフルエンザ警戒計 ships an update every 5 months, and 津波 every 2 months. Most recently, インフルエンザ警戒計 was updated on November 1, 2026 and 津波 on November 3, 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.*