Use APKPure App
Get ArduinoDroid Usb Otg old version APK for Android
Send Data From Android to Arduino via Usb
This app helps to control arduino connected devices like robot, transducer, home automation system .Its main advantage is that it uses usb instead of bluetooth to communicate arduino .Just we need to buy Otg cable for android which is costs about $1 rather than bluetooth module for arduino which costs $10