confusion of how to make osx app backward compatible & how to test them

Question

after reading the apple SDK guide https://developer.apple.com/library/mac/#documentation/developertools/conceptual/cross_development/Overview/overview.html

I\'m still c

Answer 1

1. You can install multiple versions of Mac OS on a single machine, booting between each.
2. The SDK should be the latest (10.8).
3. See 2.

One alternative to 1 that I've considered (I am in the same boat) is to create a Snow Leopard Hackintosh using an old PC and just installing Lion and Mountain Lion on my MBP.