Nicer app icon
I know this is a luxury problem and many people will not care at all, but as an iOS user I really like my home screen to look nice - app icons matter! Your app is one of the last I tried out for the Singapore MRT, and it was definitely because of the rather boring/purple/uninspired logo (sorry). I really like the app, though (and will continue using it). So, just suggesting: If others base their download decisions on similar criteria as I am, maybe invest some resources into designing a more elaborate icon (e.g. with a schematic metro map in the background?). Thanks and cheers!
I'm a fan of the simple clean icon. :-)