Does Flex Seal work on concrete?

I've heard a lot about Flex Seal and its ability to fix various things. But I'm curious, does Flex Seal really work on concrete? I've got a crack in my driveway that I've been meaning to fix, and I'm wondering if Flex Seal could be the solution. I've seen videos of people using it on all sorts of surfaces, but I'm hesitant to try it on concrete without some more information. Could you tell me more about how well Flex Seal works on concrete, and if there are any specific steps I should take to ensure a successful application?