Just downloaded the VU meter app.

Cool app. Really liked it!

Anyway, I'd like to suggest one relatively simple tweak to this app which could really improve its accuracy:
Currently, it seems like the app is reporting the voice level at a very short interval (probably by using the values reported by the analogue-to-digital converter). As a result, the volume dial is quite jittery and the maximal reported level includes some high peaks that do not make any actual sense.

I think it would be better if the VU meter would measure the average noise level over some (configurable) time interval. e.g. 0.1s, 1s etc.