I have plenty of reasons for a file manager. for example, i cannot delete photos on the fly from the native app. annoying. a file manager would allow me to manually delete the file on the go.
I use dropbox as an alternative storage with management but I have found dumb things like the photo example that spring up and could be fixed with a simple file manager.
these apps do exist and are in the market. my question was which one people preferred in my situation. if you don't require the use of one then feel free to pass this thread. none of the responses to my question were helpful or appropriate.
if you don't have constructive criticism or anything to contribute go help another thread. just because I'm new to this forum doesn't imply I'm a tech neophyte.