If you liked nike + gps…
You should try nike training center! My word i’ve never sweat so much from one half hour workout. I could barely get through the intervals! It’s free in the app store right now. What’s great is that u could do it in your home or at the gym (though i think i’ll train myself a bit more before i use it at my gym or i will feel foolish). And if you forget the drill, ypu can watch the video to remind you and it will pause your workout til you are done! And there are lots of circuit workout options with different goals. Another big thumbs up for nike!