I thought he/she was quite explicit: "Should I be looking for updates and if so when and how". Your response answered neither of those questions. Hence my comment. Was I wrong?
Unhelpful and patronising reply. The question was 'how do I do this?'.
The answer (I suspect) is: you don't need to do anything ... the app will update automatically when there is a new version (mine has a couple of times in the last few months).