I think this is the most practical to-do app. The subscription is optional and you can do without it as well. Its to the point and just helps you eliminate your tasks. I have given 4 stars only because they (Developers) can really make this app golden by removing some of the minor nuances and making it more personalized.
If you have a long list of things to do, just put it in the app and get working on them. Simple!
makeanidforreview about Any.do: To-Do List, Tasks, Calendar & Reminders, v4.1.1