just chiming in with my particular source control workflow if anybody's curious I think it might be pretty unique.
1.) Dropbox sync for all scripts within Pythonista. I have the sync script linked to a launch center action so I can quickly run it from my home screen before/after any editing has taken place anywhere. (have to be meticulous and careful here)
2.) Individual project in it's own subfolder within dropbox folder, symlinked to from an xCode project on my Mac.
3.) xCode's source control from within xCode