[habith]

> I'm actually surprised that there's so little visual consistency there...

The Stopwatch and Timer start buttons behave differently.

The timer provides some visual feedback because it starts the timer when you take your finger off the screen, you can touch and hold the button all you want but nothing happens until you release it.

The stopwatch on the other hand starts as soon as you touch the screen. I can see how that would be useful if you're timing a race or something that takes less than a second.

Incidentally, my double click/touch interval seems to be averaging around 0.12 seconds :)

[josephlord]

Most actions in iOS are consistently handled on touch up and the timer is correctly consistent with this.

The stopwatch is for accurate timing and choosing to break the iOS convention for this specific use case does not seem surprising or arbitrary to me but a conscious design choice to improve the function of the feature. Guidelines are of course made to be broken (occasionally).