When I joined Red Square in 2013 the office used different pieces of software to keep track of daily tasks. The creative team used Things, while production, my team, used Wunderlist. I was encouraged, along with the rest, to keep track of tasks using the software.
Here’s the thing though—the best designed to-do list isn’t a piece of software, it’s a pen and a piece of paper. No matter how simple the app is, it will have more cognitive overhead than writing it on a piece of paper.