GSR
Free App
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About GSR
Please see my website before downloading for more information: http://www.extremenxt.com/gsr.htm
Please don't just give this app a low review without at least saying why you had a problem with it.
This is an app to measure Galvanic Skin Response or GSR. It will only work with special finger electrodes and a smartphone. It needs an external microphone input and so it may not work with some tablets. Samsung phones may require a modified cable.
GSR logs the value of skin resistance into a comma separated value file that can be read with most spreadsheet programs. The file is written to the top of your SD memory area with a unique name made from the date and time (YYMMDDHHMMSS.CSV).
The chart shows the previous 50 seconds of values. If the value changes too much, it automatically re-centers itself. You can push the Center button at any time to force it to center. Centering does not effect the data that is stored in the file. A vertical marker is drawn periodically to help show the scrolling movement of the chart.
During the first 25 seconds, the audio output level is automatically adjusted to set the gain for the measurements. At the end the volume is restored to the original setting.
The right audio channel has a feedback signal for the change in GSR. Lower frequency means more relaxed while higher is more stress.
The background color also changes from green which is neutral to red with stress or blue with increased relaxation.
This is still experimental software, so I have some debugging numbers than can be turned on from the menu. They don't have anything to do with the GSR values. If you have any problems, or success, please email me before giving a negative review.
Please don't just give this app a low review without at least saying why you had a problem with it.
This is an app to measure Galvanic Skin Response or GSR. It will only work with special finger electrodes and a smartphone. It needs an external microphone input and so it may not work with some tablets. Samsung phones may require a modified cable.
GSR logs the value of skin resistance into a comma separated value file that can be read with most spreadsheet programs. The file is written to the top of your SD memory area with a unique name made from the date and time (YYMMDDHHMMSS.CSV).
The chart shows the previous 50 seconds of values. If the value changes too much, it automatically re-centers itself. You can push the Center button at any time to force it to center. Centering does not effect the data that is stored in the file. A vertical marker is drawn periodically to help show the scrolling movement of the chart.
During the first 25 seconds, the audio output level is automatically adjusted to set the gain for the measurements. At the end the volume is restored to the original setting.
The right audio channel has a feedback signal for the change in GSR. Lower frequency means more relaxed while higher is more stress.
The background color also changes from green which is neutral to red with stress or blue with increased relaxation.
This is still experimental software, so I have some debugging numbers than can be turned on from the menu. They don't have anything to do with the GSR values. If you have any problems, or success, please email me before giving a negative review.
All Application Badges
Free
downl.
downl.
Android
1.6+
1.6+
Android app
App History & Updates
What's Changed
Made time between samples 0.2 seconds.
Some improvements for Samsung phones
Tone on right audio channel is continuous now
Made time between samples 0.2 seconds.
Some improvements for Samsung phones
Tone on right audio channel is continuous now
More downloads GSR reached 1 000 - 5 000 downloads
More downloads GSR reached 500 - 1 000 downloads
More downloads GSR reached 100 - 500 downloads
What are users saying about GSR
Q
by Q####:
by Q####:
Can someone kindly tell me the threshold levels used to determine the GSR levels? As in, the screen is made to change colours from blue (neutral) to red (stressed). At what GSR level is the distinction made?
Q
by Q####:
by Q####:
I totally never hit this though: the ear phone could be used to a sense of heartbeat.
X
by X####:
by X####:
This app is brilliant! It allows kids (and adults!) to make their own GSR electrodes for a lie detector test or stress indicator and it really works! Great for science fair projects or just for fun. Make sure you follow the directions carefully when making the electrodes.
by J####:
Great app! Built something like this back in the 70's. One modification I made was to use the pads from my tens. Is there any good documentation on how to control the gsr?