Before I moved all my action items to Trello, the “Things” app was my favorite To-Do list for getting things done (#GTD). It’s free this week if you want to try it out. I think they have separate apps for iPhone and iPad, so if you have both you might go ahead and get it now to try out later.
Remember, if you get a free app, it’s yours for good, even if they raise the price again later. So you could get it this week, then delete, but re-install it anytime in the future for free.
Apple is giving App Store customers something to be thankful for as its offering Things as its free App of the Week.