Have you considered using the displays to announce events.
You could have selection on certain categories.You could also make a link and/or a QR code that directed to the display-calendar.
This way users could have the calendar in their pocket - a calendar that is always updated AND users does not need to install an app. They just have to save the link on their mobile.
I'm still very much exploring how to work with LuxCal and how to get the best out of it.
You could say our trouble is that 50% of our membership are elderly and have no interest the the Internet, and many of those that are online are self taught in middle age with many misunderstandings. Probably less than half who have phones have smart phones, and many with feature phones only turn them on when they want to make a call. Things like RSS and QR codes are probably beyond more than one or two of our regulars.
I've yet to fully explore the Displays feature of LuxCal, but I am hopeful that it will provide a good solution for displaying the calendar on smart phones.