Earthquake Vibration Sensor is a free Android utility tool that can help you prepare for earthquakes. With this app, you can set up variant values of three dimensions and when the sensor detects each axle's variation over your setting, your phone will send out a warning bell. The setting values of axle's variation are effective only each time you start the "Run in Background" feature.

One of the key features of this software is that it can be run in the system background even if you close the user interface form. You can start the earthquake sensing service by clicking the "Run in Background" button in the user interface form and stop it by clicking the "Stop" button. It is important to note that the software is free, but the developer encourages users to contribute generously to the victims of natural disasters in any way possible.

Overall, Earthquake Vibration Sensor is a useful tool for those who live in earthquake-prone areas and want to be prepared for any potential disasters.