I need a program (something similar to Google Tasks but with showing/hiding subtasks) with following functionality:
- subtasks (with multiple level, so I can, say, create a task with 3 subtasks, and one of these subtasks would also have 5 subtasks)
- minimizing subtasks (i.e. I click a task with subtasks, and all subtasks get hidden. When I click it again - they get shown)
- free or paid - doesn't matter
- preferably for OS X or Android, perfect variant if both, but it doesn't really matter. Web application can fit too.
I've googled for it but didn't find anything that fits, Evernote seems too complex, Astrid doesn't have proper nesting of subtasks. Please advise me, thanks!