Is this app still supported? – KyBook - EPub,FB2,PDF,DjVu Reader Review

This app hasn’t been updated in 4 years and there doesn’t seem to be any way to contact the developer. I’d be interested in this app if it supported the iOS file system but there is no way to know. Pity.
Review by DesignEQ on KyBook - EPub,FB2,PDF,DjVu Reader.