
Difficult to make it simpler. It's really just a stopwatch. Well, for Symbian Anna & Nokia Belle smartphones.
It has millisecond resolution. (But in fact it's really difficult to touch faster than 100 ms.)
It supports unlimited number of laps, has professionally looking design and intuitive user interface.
It has interactive embedded help.
And finally - it's very easy to use!
Just touch huge button with zeroes and timer will start:
Alternatively you can use small play

"Lap" button (or plus

You can pause it any time touching again the big button (or pause

When timer is paused you can clear the table and reset timer with "Clear" button (or use bin

Or you can continue timer by touching the big button again.
Nokia store: http://store.ovi.com/content/274431
Technical info:
Name: Stopwatch
Target: Symbian Anna, Nokia Belle
QT: 4.7.0+
UI: QML
Author: © Kuzma Shapran, 2012
License: GPL v.3
Source code: http://code.google.com/p/stopwatch-k/