Maybe have an onion web service and add direct Monero payment support. This will help privacy LARP'ers get into the mood. Truth be told, if you're paranoid by any measure and use a cell phone -> YNGMI. It's not cheap enough for average person to care and not private enough for ulta-paranoid to pay and use. The whole mobile infrastructure is utterly broken in terms of security and privacy so it's still refreshing to see any kind of attempt being made in this area.