If you're looking for a free, easy to use, quick timer for your Watch, then you have found it!

Quickly select from 30, 45 or 60 second timers for your training, or select a longer time using the custom option.

Start a timer on either your iPhone or your shiny new Watch and you will be alerted on your Watch with a discrete notification. If you are still using your iPhone, you will receive the notification on that instead.