Since the advent of the v7 Folding@home client, InCrease is no longer useful to control the client.
Also, calxalot, the developer of InCrease, has stated that InCrease has become "completely obsolete".
The program has been extremely useful to us for many years. It was pretty much the de facto standard way of contributing to the project before the advent of the v7 client. Many thanks to calxalot for creating it and answering many of the Mac folding community's questions and requests for enhancement!