iJishin vs Fulcanelli
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iJishin
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.
- Transforms iPhone into a seismometer
- Measures seismic vibrations
- Analyzes wave data
- Uploads seismic observations
- Graphical display of power spectrum
- Measures velocity and displacement
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iJishin – iPhone seismometer, anytime anywhere, measure and browse. iJishin is a free application that makes your iPhone(iPad, iPod touch) change into a seismometer and a data browser as well as a vibration analyser. You can upload seismic information such as maximum acceleration, “SHINDO”(seismic intensity) , occurrence time, and so on, to open your observation to the public. Please visit: http://www.geonavi.com:8888/ iJishin also provides you an excellent tool to measure acceleration anytime anywhere on any occasion. Feel vibration and measure with iJishin! FEATURES: iJishin draws full ability as a seismometer from iPhone(iPad, iPod touch). Also it provides tools for wave analysis. iJishin uses acceleration sensors installed in iPhone(iPad, iPod touch) to measure earthquake vibrations. Signals of three sensors of the device are sampled with frequency of 100Hz and are given the time stamp every 0.01 sec strictly synchronized with UTC by using outer NTP server. iJishin’s recording process starts/stops when the signal becomes larger/smaller than the triggering level. Allowance durations of the process can be set to save data before/after the signal grows/attenuates to the threshold triggering level. iJishin provides you several tools to display and to analyze quake data saved in your iPhone(iPad, iPod touch): not only a wave browser but also a graphical display of power spectrum, of integration such as velocity and displacement, and of the 2D trajectory of the device.
Fulcanelli
Monitor live Earth activity including earthquakes and space weather on an interactive map. Receive daily intelligence briefings summarizing seismic and geomagnetic conditions. This app provides pattern analysis and education, not predictions.
- Live earthquake feed and map
- Magnitude and geography filters
- Space weather layers and dashboards
- Daily Earth Intelligence briefings
- Alert preferences
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Fulcanelli is your live Earth activity dashboard — earthquakes, space weather, and clear intelligence briefings in one place. See recent USGS earthquakes on an interactive map with QuakeFeed-style green land and glowing seismic ripples at each epicenter. Filter by magnitude and region, tap the feed to jump straight to the quake, and zoom in for a closer look at what just happened. Track the space weather layers that surround our planet: • Solar flares • Geomagnetic storms • Aurora / planetary Kp • Schumann resonance Read a shared daily Earth Intelligence briefing — pre-generated so everyone sees the same clear summary of seismic clusters, geomagnetic conditions, and notable patterns. Pattern analysis and education only. Fulcanelli does not predict earthquakes. Whether you’re following California, Alaska, the Ring of Fire, or worldwide activity, Fulcanelli helps you stay informed about what’s happening on and around Earth. Features • Live earthquake feed and map • Magnitude and geography filters • Seismic ripple markers with magnitude labels • Space weather layers and dashboards • Daily Earth Intelligence briefings • Alert preferences for quakes and environmental activity Data sources include USGS and NOAA. Location is optional and only used to show you on the map when enabled.
Screenshots
Verdict
The clearest difference is rating: Fulcanelli at 5.0 against iJishin's 1.0. Fulcanelli also leads on update cadence (every 5 days vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fulcanelli holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
iJishin ships an update every 3 months, Fulcanelli every 5 days. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.
| Parameter | iJishin | Fulcanelli |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Hakusan Corporation | mark hendrickson |
Customer experience
iJishin
Fulcanelli
In-app purchases
iJishin
No in-app purchases
Fulcanelli
No in-app purchases









