app inventor 2 & arduino - multichannel voltmeter

Hello.I want to make multichannel Bluetooth voltmeter on Arduino. I recently started programming and experience very little. Tell me how to send via Bluetooth a few variables with analog inputs and how to display them in the "app inventer" ? I found examples of analog voltmeter,but there is only one analog input,I would like to use 7 or more inputs to make multi-channel voltmeter.Please help.

I would like to use 7 or more inputs to make multi-channel voltmeter.

On which Arduino?

Tell me how to send via Bluetooth a few variables

One at a time, separated by some delimiter that the receiving application understands. Follow the whole collection of values with a different delimiter that means end-of-packet.

and how to display them in the "app inventer" ?

That is NOT an Arduino question. The Android forum doesn't like Arduino questions; we don't deal with Android questions.

PaulS:
On which Arduino?
One at a time, separated by some delimiter that the receiving application understands. Follow the whole collection of values with a different delimiter that means end-of-packet.
That is NOT an Arduino question. The Android forum doesn't like Arduino questions; we don't deal with Android questions.

Thank you very much!Tell me how to do it?Is there any examples?

Is there any examples?

Of sending data to the serial port? Of course:

   Serial.print("one");
   Serial.print(",");
   Serial.print("two");
   Serial.print(",");
   Serial.print("three");
   Serial.print(",");
   Serial.print("four");
   Serial.print(",");
   Serial.print("five");
   Serial.print(",");
   Serial.println("six");

6 values and two kinds of delimiters.