It's definitely a good tool, but it's so important to be able to invite the people who react to posts... The button is there, but nothing happens when I tap it 😬
I have to go into the main Facebook app or the desktop version to do it, which is a hassle and defeats the purpose of having an app, somewhat...

I love the fact that Trello is simple enough to be easy to learn/teach and yet powerful enough to adapt to many uses. Great tool.