SpectralPro Analyzer

I downloaded and installed the free version to help determine how microphones were performing as a project that came out of difficulty communicating with others who had hearing disabilities. The free version is limited to no options other than the default, but stated that the pro version had the ability to adjust the amplitude range, so, I paid for and installed this pro version only to find that if there is an amplitude adjustment, it makes no difference in the display. It appears that the amplitude adjustment is set by sliding the left column (there is no apparent help file) but doing so made no apparent difference on the display when testing. In addition, the website listed here and in the payment receipt is dead. It's a potentially valuable tool, but there is no way to tell.

Does not save settings, ie at every restart you need to adjust settings again. Settings buttons are white on white, at least with a dark theme. I rather stick to the free version.

On Samsung S8+ it looks like the frequency range does not move upper than 7khz. The slide does barely work and never goes above. Getting refund.