Almost all FTP programs have sFTP support built in (and I can't see FTP programs starting to call themselves SFTP programs). I know transmit for mac does suppor

Almost all FTP programs have sFTP support built in (and I can't see FTP programs starting to call themselves SFTP programs). I know transmit for mac does support sftp (and a few other things like amazon s3, webdav), so despite this being an FTP program I would expect the iOS version to support sftp.