TickTick

“I've tried just about every to do list app out there and this one is by far the best. Collaborate on lists, customize notifications for different lists, kanban boards and timelines that are great for house projects. Also the most advanced recurring notifications I've found. Want to be reminded about street sweeping the night before every second Wednesday of the month Apr-Oct? Here you go.”

“I make (digital) lists of all the things I usually get at various grocery stores, e.g., Safeway or Trader Joe's, then check things off before I shop so I don't end up with multiple loaves of bread. Free version includes 9 lists.”