Seismograph

Use your phone's accelerometer to monitor vibrations on 3 axis of movement.

Review/analyze up to 30 minutes of cached data, and see real time FFT frequency analysis of incoming readings! This is the free version of the app with ads enabled. A paid version without ads, plus the ability to save/load data will be coming out at a later date.

- Captures, and displays data on all 3 axis

- Customizable consistent sampling rate

- Real time FFT frequency analysis

- Stores 30 minutes of reviewable data

- Pinch to zoom graph sensitivity

- Select data to perform analysis

- Calculate peaks, averages, and the modified Mercalli scale index

- Analyze earthquakes for estimated distance & Richter scale value

- Supports landscape & portrait screen orientations

- Option to sample continuously in background

Coming soon:

- A paid version without ads with options for saving/loading data.

Note: Some phones turn off the accelerometer with the screen as a power saving feature resulting in loss of data. Unfortunately there is no way to work around this, you may be required to leave your screen on to continue sampling data.