iSeismometer1.7.1 - App Store
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Publisher Description
iSeismometer turns your iPhone or iPad into a seismograph. Set it on a table, tap the desk, and watch the ground move. You will be surprised how sensitive your phone is.
It has been doing that since the App Store opened in 2008, when it reached #1 in Education in Japan, Austria, Finland, and Greece. Version 1.7 is a complete rebuild: faster, clearer, and finally a real instrument.
LIVE SEISMOGRAPH
. Three axes at up to 100 samples per second, drawn like a strip-chart recorder
. Scroll back through up to an hour of history while it keeps recording
. Gravity filter with a real corner frequency, so slow tilt disappears and earthquakes stay
. Live spectrum: see the frequency of footsteps, a washing machine, or a passing truck at a glance
. Dark mode and a full iPad layout
EVENT DETECTION
. A seismologist's STA/LTA trigger flags every tremor with its peak acceleration, duration, and dominant frequency
. Three sensitivity levels, from "only real shakes" to "every footstep"
. Events are shaded on the traces and listed so you can jump straight to them
RECORDINGS
. Every session is saved automatically as compact raw data, split into hourly files
. Browse by day, open any recording, scrub to its events, and see its spectrum
. Export CSV, or pick up the raw files in the Files app and in Finder
. Keep them for a day, a week, a month, or forever
WAS THAT AN EARTHQUAKE?
. Live USGS feed on a globe, filtered by time window and magnitude
. Tap a quake for its depth, time, and the official USGS page
STREAM TO YOUR MAC
. Open iSeismometer on a Mac on the same Wi-Fi and your phone finds it by itself
. The Mac shows every device streaming to it side by side, with its own recordings and event detection
. Reconnects on its own after the screen locks, the network drops, or the Mac restarts
Made for fun and for learning. A phone carries a MEMS accelerometer, not a broadband seismometer, so it feels footsteps and trucks far better than distant earthquakes. Put it on a solid floor, plug it in, keep the screen awake, and you have a home seismic station. iSeismometer is not a substitute for official earthquake early warnings or emergency alerts.
Questions and ideas: info@objectgraph.com
"This is a novelty app but one that also helps you learn something new... one of those things that is very captivating once you've looked at it once." - The Independent Guide to the iPhone 3GS
Version History • 1.7.1: the app now speaks German, French, Spanish and Japanese. Connect to your Mac by address on networks that block Bonjour; the Mac shows its address and port under Receiver
iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7.1 Sep 15 iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7 Sep 7 bug fixes 1.6 05/04/2024 bug fixes 1.5 04/25/2024 update to latest version of iOS
dark mode support 1.4 04/23/2024 Donation Banner 1.3 03/21/2011 -Wifi Transmit
-Organized Settings 1.2 05/11/2010 - Time Indicator when it's suspended
- Smooth Drawing
- Faster Spectrum Drawing 1.1 10/07/2009 1.0 02/22/2009
About iSeismometer
The company that develops iSeismometer is ObjectGraph LLC. The latest version released by its developer is 1.7.1.
To install iSeismometer on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-13 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the iSeismometer as malware if the download link is broken.
How to install iSeismometer on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the iSeismometer is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After iSeismometer is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 1.7.1
posted on 2026-10-13
Version History • 1.7.1: the app now speaks German, French, Spanish and Japanese. Connect to your Mac by address on networks that block Bonjour; the Mac shows its address and port under Receiver
iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7.1 Sep 15 iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7 Sep 7 bug fixes 1.6 05/04/2024 bug fixes 1.5 04/25/2024 update to latest version of iOS
dark mode support 1.4 04/23/2024 Donation Banner 1.3 03/21/2011 -Wifi Transmit
-Organized Settings 1.2 05/11/2010 - Time Indicator when it's suspended
- Smooth Drawing
- Faster Spectrum Drawing 1.1 10/07/2009 1.0 02/22/2009
version 1.7.1
posted on 2026-09-18
Version History • 1.7.1: the app now speaks German, French, Spanish and Japanese. Connect to your Mac by address on networks that block Bonjour; the Mac shows its address and port under Receiver
iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7.1 2d ago iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7 Sep 7 bug fixes 1.6 05/04/2024 bug fixes 1.5 04/25/2024 update to latest version of iOS
dark mode support 1.4 04/23/2024 Donation Banner 1.3 03/21/2011 -Wifi Transmit
-Organized Settings 1.2 05/11/2010 - Time Indicator when it's suspended
- Smooth Drawing
- Faster Spectrum Drawing 1.1 10/07/2009 1.0 02/22/2009
version 1.7
posted on 2026-09-11
Version History iSeismometer has been rebuilt from the ground up.
• Smooth, fast charts that scroll back through up to an hour of history while recording continues
• Live spectrum with adjustable range, window, and averaging
• Event detection: tremors are flagged with peak acceleration, duration, and dominant frequency
• Automatic recordings, browsable by day, with CSV export and Files app access
• Gravity filter with a selectable corner frequency
• USGS earthquakes on a globe, with time and magnitude filters
• Mac app redesigned as a control center for every device streaming to it
• Auto-reconnect to your Mac, charging awareness, and a keep-awake option
• Dark mode, iPad layout, and a new launch screen 1.7 3d ago bug fixes 1.6 05/04/2024 bug fixes 1.5 04/25/2024 update to latest version of iOS
dark mode support 1.4 04/23/2024 Donation Banner 1.3 03/21/2011 -Wifi Transmit
-Organized Settings 1.2 05/11/2010 - Time Indicator when it's suspended
- Smooth Drawing
- Faster Spectrum Drawing 1.1 10/07/2009 1.0 02/22/2009
version 1.6
posted on 2026-09-04
Version History bug fixes 1.6 05/04/2024 bug fixes 1.5 04/25/2024 update to latest version of iOS
dark mode support 1.4 04/23/2024 Donation Banner 1.3 03/21/2011 -Wifi Transmit
-Organized Settings 1.2 05/11/2010 - Time Indicator when it's suspended
- Smooth Drawing
- Faster Spectrum Drawing 1.1 10/07/2009 1.0 02/22/2009
version 1.6
posted on 2024-09-13
Sep 13, 2024
Version 1.6
fixes crash in MacOS 15
version 1.6
posted on 2024-05-04
bug fixes
version 1.5
posted on 2024-04-25
Apr 25, 2024
Version 1.5
bug fixes
version 1.3
posted on 2011-03-21
Mar 21, 2011
Version 1.3
Donation Banner
version 1.3
posted on 2009-02-22
Disclaimer
Official App Store Link
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