The ability to copy and paste timers is invaluable. I love the alert options.
Other timers require that you laboriously recreate your timers on other devices. The fact that I can just email them was worth the price of this app many, many times over.
Other timers also require that you input your timer as though it should be carved in stone. If you need to insert a new exercise, you will need to recreate the entire timer. In Seconds Pro, you just add the new exercise and slide it into place. This option was also worth the price of this app many, many times over.
(Can you put a price on sanity?)
I also like that Seconds Pro actually has a support website. Other timers I have used provide a link to a dead page.
I use Seconds Pro to time my morning routines, my gym work outs, and also when studying.
The worst thing about this app is the fact that I didnt find it first. How I mourn the wasted hours trying to get the other timer apps to fit my needs!