Alright...

I share two lists in Reminders with my wife for groceries and things we could do.

My main everything To Do app is OmniFocus, because it's the only app I found that gives me a Deferred option. The idea is to be able to add a task and forget about for it for the time need.

I follow the GTD method and because I use OF to organise all of my projects, I have tons of ToDos and it can be really overwhelming. I used to procrastinate a lot because I hadn't a good view of what I could achieve. So it goes like this :

OmniFocus has some Views. The one I use are Projects, Contexts (or Tags) and Flagged.

• The Project View is bloated with all the tasks I have registered.
• The Context View allows me to sort my tasks by Capabilities on the moment (A location, a person, a tool, a period in the day etc) and add a first filter on tasks that can be done. For instance I might have a list of ordered tasks in some project that need to be completed one after the other, only the first task of the list will appear here. Tasks that have been deferred won't appear here either.
• The Flagged View displays the tasks I flagged, but because there is a deferred option I can flag a task without it actually showing up in my Flagged View. It will automatically show up the moment I decided it should.

You could argue that setting an alarm on a task would basically do the same thing. But the whole point is to decide when I should begin to start doing stuff. Alarms are stressful. I don't need an alarm for a task like "Clean the cat litter" or "Get the trash out". I just need not to forget, because I usually forget those things.

There are a lot of other things I do with OmniFocus, but this comment is long enough already.

I share some Notes too with my wife, but I use Notes mainly for very quick draft. I'll go with IA Writer for longer text, and with Day One for my diary.