You oftentimes will see inventions designed to help people lose weight and get into shape. Many of these inventions are useless. Check this out. It's called the Jump Snap.
Can jump roping be difficult? Yes, but that is why you want to do it. The jump rope is a conditioning tool. It's a great way to get into better shape and develop coordination. Instead of buying one of these "Jump Snaps" learn how to jump rope, get into the gym, and KILL IT!