# iJishin vs もしゆれ

The clearest difference is review sentiment: iJishin at 70% against もしゆれ's 25%. iJishin also leads on update cadence (every 3 months vs every 14 months). もしゆれ's advantage is iOS requirement (9.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

iJishin ships an update every 3 months, もしゆれ every 14 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | iJishin | もしゆれ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/ijishin/id386745649/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **70.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Free | — |
| Size | 21 MB | 109 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Hakusan Corporation](https://appshunter.io/developer/386745652) | [National Research Institute for Earth Science and Disaster Prevention](https://appshunter.io/developer/427125457) |

## 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


### もしゆれ

[App page](https://appshunter.io/ios/app/id523545683)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iJishin free?

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

### Is もしゆれ free?

もしゆれ is free to download, with no in-app purchases.

### Do iJishin or もしゆれ have ads?

Neither iJishin nor もしゆれ shows ads.

### Which is updated more often, iJishin or もしゆれ?

iJishin ships an update every 3 months, and もしゆれ every 14 months. Most recently, iJishin was updated on November 1, 2026 and もしゆれ on November 1, 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.*