I've used get-things-done (GTD) apps pretty much throughout my whole journalism career. These apps go a bit beyond your usual to-do list—if you've ever used Trello, that's a good example. I used to keep switching between tools until I bought Things 3 all the way back in 2017. Since then, Things has met all my expectations and helped me manage work and personal tasks. Although the developer—Cultured Code—has done a great job with Things, it is an Apple-only app and it lacks collaboration tools.