# QuakeJP vs iShindo

The clearest difference is rating: iShindo at 4.0 against QuakeJP's 2.3. iShindo also leads on review sentiment (53% vs 32%). QuakeJP's advantage is iOS requirement (9.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

iShindo holds the better App Store score, 4.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 32% of QuakeJP's written reviews are positive against 53% of iShindo's.

QuakeJP ships an update every 6 months, iShindo every 7 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | QuakeJP | iShindo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/quakejp/id432766219/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/ishindo-seismic-intensity/id720738431/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 32.3% of reviews | **53.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 1 MB | 3 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [doublek](https://appshunter.io/developer/423189623) | [Hakusan Corporation](https://appshunter.io/developer/386745652) |

## 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


### iShindo

[App page](https://appshunter.io/ios/app/ishindo-seismic-intensity/id720738431)

This app measures earthquake seismic intensity using your iPhone or iPad. It offers multiple measurement scales and automatically records events, allowing for photo capture. Data can be synced across up to 10 devices via iCloud.

**Highlights:** Seismic intensity measurement (JMA, MMI, SI), Automatic earthquake event recording, Photo capture during events, iCloud sync across devices, JMA Seismic Intensity Scale (0-7), Modified Mercalli Intensity Scale (I-XII)

**In-app purchases:** none


## Frequently asked questions

### Is QuakeJP free?

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

### Is iShindo free?

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

### Which has better reviews, QuakeJP or iShindo?

iShindo is rated higher. QuakeJP averages 2.3 out of 5 from 3 ratings, while iShindo averages 4.0 from 3 ratings.

### Do QuakeJP or iShindo have ads?

Neither QuakeJP nor iShindo shows ads.

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

QuakeJP ships an update every 6 months, and iShindo every 7 months. Most recently, QuakeJP was updated on October 23, 2026 and iShindo on October 17, 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.*