I just tried the Simply Fit Board. I wouldn't recommend it to anyone unless you just want to work on a balance issue or are recovering from an ankle injury. I am 58 years old and I found the workout to be nothing more than what you can do in your own home with a couple of weights. The video included was boring, the music was annoying, and there was no motivation for even a beginner to get excited about.
I originally saw the Simply Fit board on Shark Tank and thought it looked fun. When it was featured on The View at a reduced price, I decided to try it. The first disappointment was the tiny mat that is included. The second and biggest disappointment was that the exercises are nothing special and nothing specific to the Simply Fit Board. I can do squats and sit-ups without spending extra money on a useless piece of equipment. And there are plenty of free workout videos available online that are much more engaging than the 80's style video included with the Simply Fit Board. I am in the process of trying to return mine for a refund.
Bottom Line: No, I would not recommend this to a friend