say you have a ride and there are some sections you want to time yourself on, ie: a particular hill climb…
Aha… you could re-set the ‘ride time’ function at the bottom of the hill. But you might have to spend some bucks to get that kind of reliable functionality.
I expect a trip to the Wiggle customer reviews might be in order. 
I like mine alot. I have ehcowell’s on two other bikes. The Knog is on my fixie. Mine is black and it blends in with the matt black paint just fine.
No problems to report, they are simple and they work.
There should be a fixed gear cycling computer. Enter gear inches and you could get cadance.
Surely there’s an iPhone app for that? 
Jealousy is a curse 
It’s true.
I hate the shit out of my LG phone. 
There is.
Sorry I didn’t make my point clear. I would like to see cadence as a function as well as speed on a cycling computer.
eww. Get some lycra dork.