that defined by support.
at least the server version will be publish, which has same interfaces with your downloaded version.
currently only Android version publish as test Mobile Version, under a different license type.
there is not ios version yet.
there is some plus features that normal feature has not:
--creating tagged PDF.
--add attachment to document.
--text removal.
--image content get/set/remove.
--field creating.
--PDF to HTML conversion.
--docx support
different between Server and Android is:
--server only has premium license, combine version has stand/professional/premium.
--server version can access/edit 3 pages, while combined can't. when license not actived.
--field creating is not aviable for server, when license not actived.
--signature is not aviable for server, when license not actived.