My favorite fitness app is Motion Traxx it’s audio training for ellipticals, treadmills, indoor cycling, rowing, outdoor running, bowflex and Tabata. One of the best features is currated music to the pace that is set by the coaches. The workouts are always challenging and the coaches are so motivating. Amy Dixon & Tom Holland are my favorites. There are a lot of varieties of styles to choose from and I love that there is a downloadable option for listening offline. It’s a reasonable subscription I think around $5 and change a month. Def the best one I have personally found.