If you are upgrading from the free version make sure to export your sites before you uninstall!
• Background transfers (2.1+).
• Resume support.
• FTP compression (MODE Z).
• Media scanner support.
• FTP over IPv6 support (2.1+).
• Compress and decompress zip, tar/gzip and gzip files.
• Backup sites to SD card.
• No ads.
• German, Dutch, Swedish translations.
• Create shortcuts to sites on the home screen.
See https://www.zifero.com/apps/ftp-express/changelog for a list of changes.