Before I get responses like "just format it", I don't mean erase ALL the contents in the SD Card. I mean erase USELESS contents on the SD Card.
For example if I download the Boat Browser app and then delete it and check my SD Card at a later time, there's still a folder called Boat_Browser_Free. However I can distinguish it because of it's name and therefore, I know deleting it won't cause any harm to my phone overall. However there are other folders with weird names and so, deleting those make me more cautious.
Basically, I'm planning to delete all of my useless apps in order to re-organize [if you can say that] my phone. However once I delete certain apps, I need to know there won't be trace of it in my SD Card and that I won't have a large number of folders from old apps I already deleted. So is there an app or a program that can do this? Or do am I going to have to invent it haha??