If you want a native Android app designed specifically for mobile hardware, these titles offer the most realistic experiences:

: If you own FSX on a PC, apps like Steam Link or Moonlight allow you to stream the game from your computer to your mobile device over Wi-Fi.

If you tell me what of FSX you miss—like certain planes or career missions—I can help you find the best mobile alternative to match that vibe. What Is the Best Flight Simulator? - FLYING Magazine