The included DVD served its purpose, the app contains nothing but the DVD and costs (yes that's almost an impertinence) additional money, without significant additional function !!!
And yes I have to say it works ............... especially after an intense strength training or endurance unit can loosen his muscles beautifully. Even on non-training days, you can lay at home just 20 minutes a slight unit onto the dance floor. This is just in between in normal clothing. Anyone who works a great deal with the PC, I recommend the small role for the office, here you can edit very nice at the desk his arm.
The price is okay, it's not a bargain, especially since the success could be achieved with a tennis ball, football or other surrogates. But we are honest with us .... it's just as easy nice.
Please note that there are 3 different strengths, first I recommend the Blackroll Orange, the Med is then too soft and the strongest but very hard in the composite and what kind of people without sensitive nerves :).
I would recommend this product ......... delivery via Amazon as always unbeatable quick and easy .. Amazon halt TOP