Does what I need

I use this app to measure the sound level in my car. Using it to compare sound levels of different cars as I am looking to buy a new car. So as long as the comparative approach works, the accuracy of the actual measures t is not as important to me. Although it does appear accurate. I have also used it to measure the sound level of my band when we jam.
The layout is nice, keeps the max value displayed and allows you to reset it. Shows a graph at the same time and you can export and email the data from the graph in csv format. You dont need to pay for a sound level app this will do it for you. I tried about ten other free apps before I found this one. Ive deleted all the other sound level apps except this one.

Yuuyuuyuuut345721 about Decibel X:dB Sound Level Meter, v4.3.2