Use APKPure App
Get Bluetooth arduino old version APK for Android
Bluetooth con comandi vocali per Arduino
With this app, you can link to a bluetooth module with arduino to activate or deactivate the relays on your board with recognitions of continuous voice commands, in which you can configure as: play, turn on, stop, turn off, enciende, apaga, オンにする,オフにする,
включить, выключать etc. any language