Works Great - No Ads, but no instructions – SoundLevel Review

Works great as a simple app that shows waveforms. That is all I am using it for. Mine was downloaded early May 2016 and has no ads at all. I wish there were instructions - the link to the Developer Website is invalid. I wanted a way to freeze the screen. Tapping to the right of the screen with a slight leftwards motion will freeze it, but then you have to hold your finger there. There must be a better way.
Review by Rumi The Isotope on SoundLevel.