This the by far the best interval workout app I have tried. I have tried many other high rating apps but they are just so difficult to operate and only this one got it right. My only disappointment is that it does not have an Apple Watch app but it just makes so much sense to have it. For example, I can get time in/out notifications on the watch. Please add Apple Watch support!!!!
teresrikka about Seconds Pro Interval Timer, v3.1