Expo FileSystem on stand alone app


#1

I am using FileSystem in the expo emulator to download and store a file from a url with:
FileSystem.downloadAsync(uri, fileUri, options). It stores the file in a local EXPO environment.
My question: Can I also use this functionality in a stand alone app and will the downloaded files be stored in the albums of the device. If so do I need permission from the user to do that?