Chronoshaker
Just press the screen and shake the phone. This is how you start the counter. Or you can use the classic start and pause button. If you measure more than one time, then press the bottom right button when the chronometer is running to record split times. The chronometer is now controllable with the volume buttons: Volume up - start/pause Volume down - reset/split/lap This app is an early version, so it may contain minor bugs - feel free to inform me about them in your comments.
