[madaxe]

I've a friend who principally for a living shoots things - pigeons, rabbits, and other such pains-in-asses for farmers.

In the UK, there's a fairly complex framework as to where you can shoot, how much you can shoot, and when you can do it. To this end, he's developed, single-handedly, iOS and Android apps for hunters to manage such and record their kills, principally for compliance purposes but also for their own edification.

Either way, it's been fascinating watching him learn - his approach has been to learn on the go, and iterate. He's gone from hacked-together PHP obscenity to android/iOS APIs and frameworks in about two years.