Not sure if any of you have stumbled across these very good Airport ATC simulators.
http://www.bajasim.com/ATC4Real/
They are both windows and APP based downloads for a very good price.
There is a good selection of airports to purchase, I currently have Heathrow and San Francisco. The traffic is based on real world time tables and the weather is updated every 15 minutes with real world weather data.
Take a look I'm already hooked.