Pretty primitive but I write the notes on my refrigerator with a dry erase marker. Every morning when I make breakfast I read the notes, check off what I've done, prioritize what I haven't and add new to-dos. If I have to travel that day I take a picture of the notes on my phone and save the pic to my gallery.

I find it more satisfying to physically draw a line through the tasks that I finished, rather than check them off a list on my phone. If a task stays on the fridge for more than a week I regretfully discard it as something that didn't need doing.

As a bonus my kids add notes to my list and draw silly pictures beneath some of them.