> Phonegap (a tool for creating native iphone/android apps with HTML/js) is > able to do it and HTML5 is able to do it also. > > http://docs.phonegap.com/en/1.5.0/phonegap_file_file.md.html#FileTransfer HTML5 uses localstorage, i.e 10mb space maximum available. PhoneGap file API doesn't suffer of this limit.