You can test out your app, in a very brutal mode, so that you not need to try hard to find bugs.
This app will automatically test your app, by sending touches, key presses, and other stuff in a random way so that your app can be tested in a fast way.
You need to connect your device to adb and open a console by cmd command.
In cmd, go to your location of android-sdk-windows folder. Here you must find your adb.exe. Usually is located at platform-tools folder.
So, if in cmd you are located at ../android-sdk-windows/platform-tools/
then type adb shell monkey -p your.package.name -v 500
This command will start monkey runner tool from adb.
500 means how many actions will take place…so you can change it as you wish.
If you have connected your phone trough usb in debugging mode, then your app should be started and clicks and keys must be started to automatically test your android app.