Phone spl meter.

[alvitae 10+ year member]

If only it could read higher I'd change carriers for it.

http://iphoneowner.wordpress.com/2008/08/14/iphone-sound-level-meter/

Click to read more...

 

[bamaboy 5,000+ posts]

I just looked it up, dang app cost 20$

might be cool if i had a big use for it though

 

[InhumanAcura 5,000+ posts]

uh, the spl meter on my iphone is $.99 idk where youre looking

 

[alvitae 10+ year member]

From what I read it reads to the tenth and you can calibrate it.