I'm curios, is there a system variable, that shows whether the application is published or not?
yes i think...
in Qmc u will find. there is one column lik below.
" last published column " you can check this option.
It may helps you
I think not directly but indirect if there are entries within the session log - have a look on the governance dashboard for it.
Another and I think faster method could be to scan your access point root- respectively mounted folder to the *.shared files with a filelist-loop. Further I think it will be possible to read these information from various configuration-files like the *.pgo files (you need to change the qlikview server settings to PgoAsXmlAlso = 1) or other config-files. But I don't know actually where exactly to find these information - you will probably need some searching in this files.
Sorry, I haven't read carefully enough that you are speaking about QS and not QV. By sense I have no experience with the server side but I could imagine that my above mentioned approach could be work, too. Good luck.