unfortunately it is not possible to mine sia coins with mac, becuase mining needs alot of GPU power and high cache processor, and mac lacks in upgradation and customization, you have to build a pc with strong specs in order to mine sia coins.
Agreed with Bryan. I recently unplugged my A3 because the monthly power consumption to earnings ratio exceeded my own personal set limit. Want to buy my A3? You might be making 300 US pennies per day but certainly not dollars. I wouldn't even put it that high.