Although I'm not exactly sure what you are referring to, I think you can use Google Keep for that. They have a way to make lists and reminders based on location and time. However, they don't really have a "due date" system incorporated, so you would just have to create a note that tells you when it's due. It'll help you keep track of them, but since i'm not exactly sure what you are asking for, I might not be on the right track.