Karel De Vos is a professional in their field. Colleagues describe them as "Karel's excellent programming skills have vastly improved over the years. He is able to keep huge amounts of (time mngt) domain knowledge organized in his head and utilize it during work. He will also exactly remember how a certain feature works and is able to explain this to you clearly. We were impressed with his product and how easy it is to manage complex time management situations." and "he build a fine piece of software we use every day"