I am a pro user of Diarium.
Diarium version: 3.0.87
Operating system: Android
Device model: phone and tablet
The current drop-down bullet list options are for "unordered" and "ordered".
Include a 3rd option labeled "Tasks" with a box icon which can be checked on/off when task is completed. This increases functionality from "after the fact" recorder to "daily planner", of sorts.