Live Spectrogram

Please add a save feature. Works perfect but there have been times where I have needed to compare sound levels I can't because if I close the app it erases everything.

EASILY one of the best Spectrogram apps of 2015

pinch-zooming is very useful for pinpointing mid frequencies,though update response is choppy and I would have liked some options to change window size. there also needs to be a switch for logarithmic frequency scaling - linear display is only useful in a handful of situations. all and all a good design that just needs a bit of user customization