Good, but not great. While this is one of the better analyzers, it lacks usefull features like the ability to zoom, save and load the spectrum. If you're not looking for features like that this isn't bad. I've yet to find an app with editing features like souund or harmonic removal like the ISSE spectrogram editor for computers, but I have found other apps that are further along for these types of things. Again not bad for what it is.

First and foremost, it would be much more useful for my needs (classical singer) if it had a frequency range selector, since i really only need a couple KHz. Also features like importing recorded audio, tabbed comparison of two files... Think about developing it a bit more, I don't think there's a proper Android app that could cater to singers and voice analysis, compared to the iWorld. Would gladly shell out some money for it.

Great app! It would be wonderful to be able to limit the graphic to a lower frequency, though. Voices can get too concentrated in the bottom. Putting it in log mode helps but it's not a perfect solution.

Good app with a few problems Unfortunately, the only way I could find to lower the frame length (changing the resolution) drastically reduced the quality as well, making it useless for most of the things I wanted to look at. I am not sure if this is a glitch or simply a problem with FFT, but it seems like I should just be able to zoom in on the high quality visualization (and the screenshots would suggest that that's possible). Except for that however, it is quite respectable spectrograph app overall.

Developer came through! Works exactly as advertised, slick interface, and the developer was very responsive! Easily the best spectrogram app available for free, hands down.

Although a bit lacking in features, it's simple and ad-free. A fullscreen mode without the white top bar would be very nice though.