Great game, love the WWI aerial combat theme. The main (annoying) problem is that even after youve paid you still get annoying pop up ads when launching the game. That is really rude, especially to your customers who have purchased the in-game add ons into support the developer. The ads really ruin the immersion of the games theme.
Not sure when the ads started, but it definitely wasnt there when the game was first released on the App Store.
Rating dropped down from 5 stars to 3 due to the ads; very inappropriate for a paid app.
Phalanix about Sid Meier's Ace Patrol, v1.4