One for the techno heads: Useful camino planning apps

I've been using Trello, which started off life as a project management tool which is both online and available as a phone app. You make lists and then can make cards to go on each list. You can also set up check lists, due dates and colour code things.
I've set up a list for each day and put cards putting different walking stages for the day. The cards are very easy to transfer between lists so in theory I can change stops along the way and just shift them from list to list.
If I read something interesting about my route I just add it to the appropriate card or list. You can also add attachments so useful PDFs can also be included.

So those of you who like to be organised online or on a phone...what do you use?