I just tried to write am backend for this todolist format: https://github.com/ginatrapani/todo.txt-cli/wiki/The-Todo.txt-Format
and after a few hours with no real success I gave up. I want to first have a very simple convertion of some tasks like that: TODO foo DONE bar to: foo x bar bonus would be to ignore headline levels for now so: * Tasks ** TODO foo ** DONE bar would be ok too. There is a nice opensource android App that uses this format: https://f-droid.org/repository/browse/?fdfilter=task&fdid=nl.mpcjanssen.simpletask so it would be nice to be able to easy have a list of your tasks with you in a touchfriendly environment. I know there is mobileorg but the ui is horrible and the projekt is more or less abandoned. Maybe export/import backend is the wrong way to go, a sync or exchange feature would be better so maybe org-agenda todo export/import ability would be better? but for now a export alone would be an advancement. dont know if import or export can update/replace lines? maybe with some kind of taskid property? maybe thats stupid and I should just fork such am tool to make it understand org-mode format, but a automatic way to send stuff one way to android would be a good starting step, to test if I use that feature much. exporting to todo.txt format seemed just to be the easiest way, heck I even could write a macro to do that if nothing else is reasonable easy to do.