CentWatch 4+

I downloaded this a year ago but didn’t get a chance to use it in a TSD rally until yesterday. It worked great! I didn’t use the stopwatch, just the time-of-day clock in hundredths mode. Large digits and the ability to display white numbers on a black background made it easy to read even on bumpy roads.

Thanks for this app, timing in hundredths of a minute, minutes and hours. Simple and works without any issues. The reverse screen/text color in black and white allows for best viewing in sunlight or shade. Must have for car rally.

This program is great; it worked well for a Monte Carlo rally. I appreciated the included adjustments in hours, minutes, seconds and tenths. I adjusted the start time from 13:00 all the way to zero for our True Time...even though I realize now I was using it incorrectly (didn't see the start or split lap options).

A word of warning to casual rallyists about iPhone's clock: when you set the hours/minutes of the clock, the iPhone does NOT reset the seconds to :00, but instead keeps counting on that minute. So, an unknown number of seconds will go by and suddenly your phone is out of sync again. Therefore, if you use Centwatch as your only rally clock, and the rallymaster synchs to WWV, you WILL need to adjust whole seconds.