I wasn't sure what to expect or how Wiziapp would work, but I have been pleasantly surprised. I'm using the free app right now but plan to upgrade . The mobile version of my site operates the way users expect a mobile site to operate. In addition, when I had a glitch, the people at Wiziapp responded quickly and helped me solve the problem.
I ultimately decided to create a duplicate site so that visitors could choose whether or not they wanted to view the site mobile. But I understand that when using a free plugin, it's unrealistic to expect to get everything that comes with the paid one.
All in all, however, I give Wiziapp and A +.