The holiday season doesn’t just usher in the shopping season, it also signals the count down to a new year. Which means that, in addition to trying to work off all that holiday food, people will obsess over resolutions, plans, and goals. Yes, it’s the perfect time to be a todo list app or a productivity app. And as if warming up the engines for the holidays, a handful of such apps and services have stepped up their game to deliver just a bit more smartness to their list of features. Here are five of the best known todo apps that have just made your productivity even more productive.