# iJishin vs 3D Quakes

The clearest difference is rating: 3D Quakes at 5.0 against iJishin's 1.0. 3D Quakes also leads on update cadence (monthly vs every 3 months) and iOS requirement (11.2 vs 16.6). iJishin's advantage is review sentiment (70% vs 33%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

3D Quakes holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews complicate that: 70% of iJishin's written reviews are positive against 33% of 3D Quakes's, so the app with the better star average is not the one people write more warmly about.

iJishin ships an update every 3 months, 3D Quakes monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | iJishin | 3D Quakes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/ijishin/id386745649/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/3d-quakes/id1406231944/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | **70.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 21 MB | 48 MB |
| Requires iOS | 16.6 | **11.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hakusan Corporation](https://appshunter.io/developer/386745652) | [Kentaro Emoto](https://appshunter.io/developer/978603014) |

## What reviewers say

### iJishin

[App page](https://appshunter.io/ios/app/ijishin/id386745649)

This application transforms your iPhone into a seismometer, allowing you to measure and analyze seismic vibrations. You can upload your observations to share with the public and utilize various tools for wave analysis, including graphical displays of power spectrum and displacement.

**Highlights:** Transforms iPhone into a seismometer, Measures seismic vibrations, Analyzes wave data, Uploads seismic observations, Graphical display of power spectrum, Measures velocity and displacement

**Features:** Vision Pro support

**In-app purchases:** none


### 3D Quakes

[App page](https://appshunter.io/ios/app/3d-quakes/id1406231944)

Explore a 3D visualization of earthquake data, including topography and tectonic plates. Customize your view by adjusting magnitude, depth, and time ranges. Additional data can be downloaded with a NIED account.

**Highlights:** 3D earthquake distribution visualization, Interactive rotation and scaling, 3D topography overlay, Tectonic plate visualization, Customizable magnitude, depth, and period ranges, Downloadable additional catalog data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iJishin free?

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

### Is 3D Quakes free?

3D Quakes is free to download, with no in-app purchases.

### Which has better reviews, iJishin or 3D Quakes?

3D Quakes is rated higher. iJishin averages 1.0 out of 5 from 1 ratings, while 3D Quakes averages 5.0 from 1 ratings.

### Do iJishin or 3D Quakes have ads?

Neither iJishin nor 3D Quakes shows ads.

### Which is updated more often, iJishin or 3D Quakes?

iJishin ships an update every 3 months, and 3D Quakes monthly. Most recently, iJishin was updated on November 1, 2026 and 3D Quakes on November 2, 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.*