Appmuse

This app offers nothing that you could not get from a free spectrum analyzer app. In fact, you will find it more convenient to work with many of the free apps. This app has absolutely no features that could justify paying for it. All it does is doing a simple FFT. I want my money back, however it is too late - unfortunately! ? Show more

Good. More detailed grid, more better.

I monitor a bluegrass band with this app. Nice to know room characteristics for PA low & high freq. settings.

When I want to the frequency of a background tone on the radio, this works great. My wife bought some Tibet bowls. I wanted to know the resonant frequency for each bowl. This app worked great. Lots of applications. Now, only if it could fix the ringing in my ears! Show more

Nice analyzer and responds well. However some features would be nice.i would like to see the ability to freeze a spectrum and possibly save it or have it emailed so it could be studied. Also, it would be nice to isolate portions of the spectrum to analyze it. Show more

Exactly what I was looking for. Just right.

Last one you'll have to buy. Make an apple watch port please!!

I bought this app because I wanted to identify a mysterious high-pitched tone that was audible in my house. It worked great. The tone was clearly visible as a peak around 6400 Hz, and then I was able to confirm using a tone generator. I'm just a casual user, but the app presents a feature set that would appear to satisfy more serious users too. It also has a very no-nonsense interface, which is what I look for in an app. Show more

This works really well for audio analysis

Very east to use. It allows stretching/shrinking the frequency axis (for the linear scale only). It would be nice to have a way to freeze the spectrum to make some quantitative comparisons. Then a screen snapshot could preserve the results. Would also like to know just what kind of filtering is being used. Show more

This is a great app for showing the basics of FFT to physics students. It would be a nice touch to add the ability to manually place markers, but with care the auto-peaking markers work well enough. Not bad for a few measles bucks! Show more

Works as expected.

Use it to check venue audio dynamics during sound checks.

Unlike many other spectrum apps, this one allows some configuration. You can select the window type, peak hold average, and number of spectral lines, among other things. You can't select a maximum frequency other than the highest possible (I guess because this would require a down sampler and digital filter), but since it lets you pick a very high number of spectral lines, you can window the results to get what you need and still have reasonable resolution. We use it for quick and dirty measurements when we don't want to set up the high dollar gear. For example, we recently used it to determine blade natural frequencies (or at least the first one since it radiated significant sound) for an axial compressor to select which should be adjusted to meet the spec. This saved the project many hundreds of dollars in setup time for each blade. We used our high tech gear to get the final data, but this app was great for the initial cuts. I'd give it five stars, but I'm saving the extra star for when they update to provide a linear vertical axis and perhaps more control over FFT parameters. Show more

Great app that works as advertised. Successfully EQed my home stereo system which is set up in a problematic room with a high ceiling and many reflective surfaces. Running on an iPhone 6 plus. Show more

I'm a practicing electrical engineer and I wish I'd had this app when I took the DSP class in college. Straightforward control of FFT parameters makes it fun as an exploration tool. I'm using it to track down acoustic noise on voltage regulators. Show more

This is a great app! I use it all the time .... Especially to find troublesome hums, etc.

Works fine on my iPhone 5S. Great, simple little monitoring app. I bought it for the markers, which helps me kill feedback.

Oops....white screen only....does not work on my iPad 1....ver.4.3.1...hmmmm....I hope it works on the iPhone 4!

I use Spectrum regularly in my work with venue audio. It's great for Eq-ing the house and testing speakers and selecting mics. Easy to use with great results.