It works. I knew on the front end that you get the "lite" version to try it out. You'll hear only a minute or so of that conversation. If you like it and want to continue to use the app, you buy it. No surprise there. Whoever said otherwise didn't read very carefully.
I bought it. It's worth it.
No, it's not "perfect." Learning to coordinate the red button with adding a call, then merging the calls, then get the phone quickly to your ear, took some practice - like twice. I've got it now.
One user complained that it is too difficult to engage an incoming call quickly enough, and you loose the first part of the conversation. That potential was obvious before the situation even presented itself, but I've developed my own "work-around." When I receive an incoming call that I want to save