I have had this tool for several years now and can say that it is now becoming a mature product, its feature rich, works exceedingly well, and the support has always been responsive.
They have recently gone above and beyond to investigate an issue with some html code that originated in a different company so a big thanks to the dev team there too
I'm very happy with Gist and it's visual workflow feature and as a small business owner i'm more than happy with this product