

If you don’t find any hostable service, perhaps you could try Obsidian if its Kanban plugin works well in the mobile client. It’s closed source, but all data is stored in markdown files, and you could use a self-hosted git server for storage and synchronization between users.


Never used MS Planner, but the Kanban plugin does everything I need and I use it for my larger hobby programming projects. I was already using obsidian.md for other things so for me it was very convenient.