Free Sky Gamblers Game for all iOS devices instead of $5.49

My dad is a huge fan of war and combat games and this is his new addiction. I was playing around on his iPad yesterday and I was just looking for free games. I saw this and thought that he might like it since he's already completed his "Commando" game twice. He's been addicted to this one ever since I showed it to him. It's basically based on World War II and the character is a pilot. SO you're going to be bombing enemy buildings and over realistic locations like Pearl Harbor, the Coast of Dover, Midway, Germany, and France. The visuals are great and the setting is incredibly accurate - even down to the atmosphere. That being said, this is to be played online so make sure you're connected to your wi-fi or you have unlimited data coverage on your carrier.