Looks good, too limited for what it costs.

It’s a great-looking app, but it lacks the ability to nest intervals. For example, I’d like to set a ten minute warm up, seven sets of two minutes intense/three minutes easy, and then a ten minute cool down. But to do that, I’d have to create the entire setup manually by creating 14 different intervals as there’s no way to duplicate intervals. It’s a great concept, and I’d give it five stars if it added these simple features, but for now it’s quite expensive for being so basic. (And if you’re looking for an interval timer, chances are your workout, etc. is more complex than simply repeating sets of intervals.)

studiomayer about Timers - Interval timers for workout and making fussy coffee