Planning and checklist apps Evernote (and any other note-taking apps, even the standard ones). Nothing complicated - just create a new note and write a list.
Checklist - make your own checklist or use a built-in template. You can set reminders, share lists via email or sync them to other platforms.
Wunderlist - the app was originally designed as a to-do planner, but it's great for creating checklists. It is very simple and makes reminders.
WorkFlowy - the app for minimalists. Nothing distracting, just lists with easy sorting and searching.
