Some Android apps are designed not as standalone trainers, but as companion screens for desktop simulators like X-Plane or Prepar3D.

These apps are often more expensive ($30–$50 range) but offer a much deeper simulation of the system logic, including GPS coupling, autopilot modes, and comprehensive nearest airport functions.

over Wi-Fi, allowing you to use your Android tablet as a touch-sensitive instrument display. Spacedesk (Free Alternative):

If you already use a desktop flight simulator, you can use the