Actually Free!
If you, like myself, are just looking for a timer app that allows you to preset time intervals for your workout so you can just keep going without looking at your phone or stopwatch, this is it! I literally just want to do a run/walk workout of my choosing while listening to my music. This timer beeps on the intervals I set, without cutting out my music. It is super basic, but FREE. All the other HIIT timers I looked at have a free trial and then a subscription kicks in. I don’t need all the bells and whistles, just the timer, and this does the trick. The only thing I’d change is that it stops working if you lock your phone, so you have to leave it running on your screen and risk accidentally hitting the pause button if you put it in your pocket.