Missing volume slider in Tone Generator for Android phone

[ScottB]

I have the Lite version of Tone Generator installed on my laptop which allows you to adjust the app volume using the slider at the bottom of the screen.

On my Android phone I also upgraded from the free version of Tone Generator.  However, the phone app does NOT provide a volume slider. 

I'm using the phone app to send signals to a device which uses an amplifier.  The instructions for the device I'm sending the tone signals to says to turn your phone volume to it's highest setting, and to use the volume on your app (in my case Tone Generator) to slowly raise the volume.

I need the volume slider on my Android phone in order to use the device with the amplifier.  But the volume slider is totally missing from Tone Generator for Android.

Is this a known issue?

Thanks in advance.

[Chris75]

Hello ScottB, and yes, the mobile version of the program does not include the volume slider as the volume is managed by the phone's volume control.