This post is to thank IPACS again about their work, details in mind:
With an iPad you can set the UI to have a trackpad to control the side stick (see the attachment). You don't tilt your device to fly, you control your plane with the trackpad.
In Settings > Controls set Analog and Autocenter and Rudder auto.
The trackpad behaves like the Airbus side stick, if you put it in center, the plane maintains its trajectory, slope, direction, curve...
Here comes the gorgeous details: I've just ask a pilot friend to know whether I was dreaming or not. At 50 ft, the plane memorizes the slope and the flight commands change and behave like Boeing ("tilting" mode). It is simulated in Aerofly. At 30 ft the plane makes a -2° slope forcing the pilot to make a round before touchdown. It is simulated in Aerofly.