Does not transfer to your iPhone

I just started a HIIT and it is quite a challenge to keep track of your time, going full speed while trying to figure out how much longer you should do this, and how many rounds you already did. This app seems like the perfect solution! You import your own workout music and program the training for today. it works as a gem, on your computer. But when you want to transfer your file to iTunes, so you can import it on your iPhone (or other device), it does NOT WORK!
I asked support, but after one first reply asking for specifics, never got a reply anymore. After three attempts I gave up.
I am deeply disappointed since the app works on my desktop, but I can not take that with me while going out.
I hope someone soon comes up with a better app, this one is just a waste of money. Does anyone know how to apply for a refund?

Max Workout about HIIT Workout, v1.0