Turn your iPhone into a seismometer. Measure and record shaking in real-time, and analyze with tools including FFT spectrum, velocity/displacement, and seismic intensity.
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.
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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.
This is a nice app but what it really needs is the ability to utilize the iPhone accelerometer to detect earthquakes and automatically share that data to the cloud and/or the USGS. Only when enough similar readings are detected from a certain region within a narrow timeframe would the data be considered legitimate and then be pushed back out to the map for all users to view. The app could also be active only at certain times of the day/night that the user defines. As well as only be active when connected to pre-defined wifi networks. Such as Home or work. Another option would be to only take accelerometer reading when it is plugged into power (such as when on your night stand or connected to a computer USB). The app could also use the iPhone GPS to disable sensor reading when moving. As well as only record seismic data when the app detects the iPhone is laying flat on its back. Another option would be to disable the seismic sensor data output when a face is detected with the front facing camera. Requiring the app to be running in the foreground would also further prevent false readings. This could easily, quickly, and cheaply create a huge network of seismographs around the world.
We have fixed a bug relating to uploading data to iCloud.
You can now configure the iCloud upload directory.
Version 6.1.0
The developer, Hakusan Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
Dark Interface
Information
Seller
Hakusan Corporation
Size
22.2 MB
Category
Education
Compatibility
Requires iOS 16.6 or later.
iPhone Requires iOS 16.6 or later.
iPad Requires iPadOS 16.6 or later.
Apple Vision Requires visionOS 1.0 or later.
Languages
English and 3 more
English, Japanese, Simplified Chinese, Spanish
Age Rating
13+
13+
This app is rated 13+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls.
