# QuakeJP vs 津波

The clearest difference is in-app purchases: QuakeJP at none against 津波's 4. QuakeJP also leads on ads (none vs shown) and review sentiment (32% vs 0%). 津波's advantage is update cadence (every 2 months vs every 6 months). On price and device support there is nothing between them.

Both are free to download. 津波 sells 4 one-off in-app purchases. QuakeJP asks for nothing beyond the download.

QuakeJP ships an update every 6 months, 津波 every 2 months. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | QuakeJP | 津波 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/quakejp/id432766219/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **32.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 84 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [doublek](https://appshunter.io/developer/423189623) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## What reviewers say

### QuakeJP

[App page](https://appshunter.io/ios/app/quakejp/id432766219)

Visualize earthquake data for Japan with detailed historical records and a color-coded map. Explore recent and major seismic events, with information available for quakes of magnitude 5.0 and above.

**Highlights:** Latest earthquake display, Historical major earthquake data (1900-), Two-year big quake records (M5.0+), Color-coded pins by magnitude, Detailed earthquake information on tap, Map zoom and pan functionality

**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 QuakeJP free?

QuakeJP 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 QuakeJP or 津波 have ads?

津波 shows ads; QuakeJP does not.

### Which is updated more often, QuakeJP or 津波?

QuakeJP ships an update every 6 months, and 津波 every 2 months. Most recently, QuakeJP was updated on October 19, 2026 and 津波 on October 8, 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.*