I have used various To-Do Apps on my Mac over the years. Right now I am using a very simple App Called To-Do Lists by Antnotes. There are many excellent To-Do Apps for the Mac that are much more sophisticated. This article describes several of the more prominent ones. I have tried several of these, but I just don’t need that much horsepower, a simple notes system is best for me. If you use a To Do App, you might take a look at the article. It might be time to move up to another To Dp App or maybe just start using one.