5 stars: I think the game is great! The gameplay is simple, but that's what makes it good. Managing your crew and time, on top of ensuring planes are moving as they need to is enough to fill my past time. My only complaint is that the game is not offline (I couldn't tell you why), but hey, you can't have everything. Especially considering the experience, this game is a 5 star.
4 stars: It's a really fun game that makes you feel like you're a real-life airport owner. The golden coins are a little challenging to acquire. Also, the staff, there's just not enough to accommodate more than four medium planes, for those with little to no golden coins to purchase them permanently, I wish there were more alternatives. But all in all, it's a really great game. It's really enjoyable.
4 stars: I'm really enjoying this game! But I've noticed that sometimes I don't receive the rewards for finishing a plane or collecting the free ones after watching an ad. That can be annoying, especially when it does it after you've spent minutes getting a plane ready to push back. I'm hopeful they'll fix this glitch because I want to keep playing, it's fun.
3 stars: New update is even more complicated than previous version. More realistic, I like the 2d view and auto handling, but no longer useful for a 15-20 minute break a couple times per day. I don't have time to look into the contract details, or maybe I just don't care enough about that part of the game. Runs smooth, looks great. Awesome ...