If you need it on phone there wont be any separate app. You need to use orchestrator app or use browser to go to your orchestrator where you can access apps on phone as well
Employees needs to be given access to your cloud orchestrator in order to access apps
Else there is aseparate license if you dont want them to come to orchestrator which will give you a url to the app directly
For more clarity, Check this video on how to use apps from your mobile
Cheers