Todoist for quick notes and todo lists. I'm also using my own TodoistToTxt (available on github) script running every minute to generate a todo.txt file out of Todoist inbox, which is rendered on PC with Rainmeter.

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They do not maintain a to-do list (mentally or physically).

It's not customizable enough and there aren't enough distinct fields for inevitably complex work tasks. Google Sheets fixes that. No, it's not a to do list app, but that's why I love it. It's an app I already use. It's extremely customizable.

Best to-do list app for taking control of your to-do list

Games are fantastic at motivating mundane activity—how else can you explain all that time you've spent on mindless fetch quests? Habitica, formerly known as HabitRPG, tries to use principles from game design to motivate you to get things done, and it's remarkably effective

The best to-do list apps

Because keeping track of your tasks is an intensely personal thing, and people will reject anything that doesn't feel right pretty much instantly.