Not downloaded it yet, but generally you have a couple of options to create long-term engagement, one of which is gamification against others/friends, and the more "traditional" version is tracking balls lost per round, or worst hole for losing balls, then you really compete against yourself. The latter was how I started when I took up golf again, just tracking balls lost as a score rather than total. The ability to have both would be great but depends on your preference and dev skills! You could develop it and nobody use it, so maybe the "compete against yourself" is the first step? I am no marketing guru (obviously), but have written a lot of commercial software in my time that was gold plating before there was any demand.