root is required. without it, the app will not launch. problems? use the email developer link in the play store. today some apps store big files over the internal sd card (e.g. games, podcasts, offline rss content, pictures, videos, offline navigation software). typically users have a small internal sd card size (~16gb) while the external sd is a lot bigger (~32-64gb). most of these apps users download from the play store save their application data in the internal sdcard by default and don't have an option to use the external sd card to store data so they starve your internal sd card memory. foldermount is the solution to this issue. this app has the ability to link folders in your internal sdcard to folders in your external sdcard thereby populating the internal sdcard folders with cont