BlueTooth Serial Controller 16 is an Android application developed by NEXT PROTOTYPES. This free app falls under the Social & Communication category. It is not a game controller, despite the name change from its previous version.

The app allows users to engage in wireless serial communication with devices such as AVR, PIC, Arduino, Raspberry Pi, and more, using Bluetooth SPP. Users have the freedom to customize the name, command, visibility, and repeat of the buttons. They can also store up to 5 different set-ups by selecting the controller (A-E). In terminal mode, users can save and copy communication logs. Enabling the [PREFERENCE - OPTION - CONTROLLER+TERMINAL] feature allows users to view sent and received data.

It is worth noting that the app supports backup functionality for the value of the controller. Users can also adjust the button size to fit their device screen size. The app requires permissions for backup (WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE) and advertising (INTERNET, ACCESS_NETWORK_STATE).

Please note that this app is not a game controller and the icon has been changed from the previous version.