TimeIt (Free)

An easy to use stop watch app. Clock starts/stop on tap anywhere on screen (without a button). Great for quickly timing a race, keeping track of how long a meeting is going, etc.

Features:

* Keeps running even with screen off or if placed in the background
* Lap button to display lap time.
* Last 3 times are displayed on screen.
* Sound settings to play sound given times.

Note: Ad supported app.