We have slightly limited the maximum deflections on all control surfaces for most aircraft on iOS so that ( most of the time ) you won't get into a stall. As you might know, the desktop version allows you to enter a stall, but then you are using a joystick. On mobile devices you have no feedback whatsoever with respect to your neutral position, so most people would simply get into a stall to quickly by accident.
Its our ongoing battle between making a realistic simulator but not make it too difficult for most users.
If you would see our emails we get complaining our flight physics are bad, you would understand our decisions in making the physics on iOS the way they are.
One example: We get lots of emails complaining, that the sound of the KingAir or Corsair doesn't change when you move the throttle. Well, reality is, that you do NOT hear any difference ( or at least not what they are expecting! ). So we are in the difficult position: Shall we introduce some slight sound modification when you move the throttle, hence making it less real, or leave it as it is, maybe confusing most users.