About to buy SimpleAudiens facebook software

Hi guys, I was thinking to buy this software in order to start building my faceook audience, could you tell me your own opinion about it?
Or another software that can handle what SA can?
Thanks!

they stop selling the software at this moment, and the support is not good.

I am using SA and also fbaudienceblaster, compare the result, fbaudienceblaster give a better result. also more stable than SA.