What I want to do:
I am working on a project, where I need an Android smartphone to connect with my Raspberry Pi 3b+. after connection, I need to control some GPIOs of the pi with my phone, and input some variables from my phone, that i can use in my code (Python) saved on the Pi. Also, I need a proper "App-Like" interface for the phone...
I dont know where to start from, can anyone suggest ANY way to accomlpish this, or anything close to this, either over Wi-Fi or Bluetooth.