In hindsight - I think this is probably OK given, that as mentioned, it's not spot on!
Can I recommend everybody who develops these sort of applications write to
GNAS and say that we are not happy with the situation of copyrighted handicap tables and wish them to sort it out even if that means eg using Australia's. The more people that do this, the more chance they do something and the better we can develop useful applications that can be spread throughout the archery community.
[Aside: I've done one myself for records, tourney reports and handicaps but mine is still not perfect as to cope with second sessions, juniors etc etc makes makes these things really tricky, and I won't dare publish it as it does need to do the handicaps correctly to be useful and then I'm just not sure where I stand]