The best replacement for to do list is to-do list.

The best alternatives to to do list are rated as following:
★★★★★  to-do list
★★★★★  calendar
★★★★★  tasks outlook
★★★  tasks
★★  to do list
★  task

Your alternative for to do list is not listed? Suggest!
Speaking about to do list, one probably shouldn't forget about calendar app.

Other search terms related to to do list and their ratings are:
★★★★★ calendar app
★★★ ical
You have in mind a companion for to do list and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of to do list in all years. Click on graph for more.
to do list
to-do list
calendar