SpectralPro Analyzer

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.

Useful application, I have hypersensitivity to sound (as a result of sensory dysregulation due to Autism) which means I can hear above, and below human ranges. and I use this app to find certian sounds that bother me. Worth every $$$

Works, I guess. Best summed up with a "Meh". Definitely not worth $5, stick with 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.

great app, I use it for work and for fun. would be awesome if you could output the data, not just the image.

I would give it 5 stars and pay twice as much if it had a crosshair to see exactly which frequency is peaking. Like spectrogram pro for ios has.

Perfect app for a quick look. It is very easy to use and very intuitive.

Upgraded but still getting basic version,to get pro I have to go on play store and open it from that.

does the job its made for. cleanand easy

I'd give it 5 stars if I could use an external audio input.

It stopped working at some point, but the new update seemed to fix all issues.

Works perfectly on Pixel 2. Thanks.

Outstanding

Great idea but application needs bug fixes and further development. On S3 , android 4-4-4 it crashes every time I try to exit app, forgetting everything that I've set. Low frequencies have low res, log scale can't be used for high sample rates, etc. But there seems to be no progress at all

I will give a star for each point implemented: 1. Subtracting of pre recorded spectrum(e.g. noise) 2. Lower sampling frequencies(e.g. 4kHz, 2kHz) 3. Saving of spectrogram in text Or higher resolution image with time marks Other than that this app is much more accurate than tons of others I tested.

(update) after contacting the provider the issue was resolved in a few hours. Super fast service in my book and I look forward to trying out the app in the real world. There is a further update to be released to correct the issues with the latest upgrade in android 8.1 original post I purchased this after being impressed with the free version and wanting to do more as an engineer. I just can't get it to work at all on either the free or the paid for Pro version. No spectrum just a load of settings that produce nothing. No obvious means of contacting the app provider.

This app really needs time labels along the X axis.   Other than that, I am quite impressed.  My background in acoustical analysis would make this of interest to me, but I think even those without such a background would have to find this very cool.  I have a memory, from more than a quarter century ago, of being shown a waterfall plot, and hearing the sound that was represented, and having a light go on in my head about the relationship between what I was seeing and what I was hearing.  Back then, it took the better part of an hour for a pen plotter to draw the waterfall plot that I was shown.  I can imagine people today, watching this app on their phones in realtime, and having the same epiphany that I had back then.   About twenty years ago, I wrote a program like this to run on an MS-DOS-based computer, in realtime.  Back then, it took a specialized digital signal processor to handle doing the FFTs fast enough to make this possible.  Isn't it amazing how far the technology has advanced, since then, that this can now be done in a small, common, handheld device.

I thought the free app was good. I kicked myself for forking out for the full version. Random signals and differences between devices asked for help was told to calibrate? Sent images of faulty traces but no reply since then. In short for me poor support, over priced app with very little extra for paying full price. Use the free one and stay happy.

This app would be far more useful if the frequency & time axes could flip. The app displays horizontally only, with the time scale on the long axis of the screen. That design misses the point of an RTA. As an audio engineer, it's the frequency scale I need to see with precision, (wide axis) not the time. The only reason I can think of to put time on the long scale would be to find BPM but there are better apps to do that. This is the only spectral RTA I've found, so kudos for that. But please add an option to switch the axis. Moreover, a feature to find and read out exact peak frequencies when a peak range is touched would take this app from a cool toy to a pro auto power tool.

It kind of works, but in an unpredictable way...you have to randomly mash your finger on the amplitude and frequency scales until something useful hopefully appears. 5 star app with range scaling fixed, particularly with numerical input. FFT works great, very fluid.

The logarithmic scale feature which I paid good money for is not accurate. Middle C which appears a perfect 262 hz in the linear version appears to be 200hz or so. Also you cannot rescale to limit the plot to a particular octave. I want this app to be able to tell me which notes are being played in a piano chord, but I cannot trust the scaling - please fix this before I up my rating. It would also be a great help if you could rescale in musical notes, so that you can clearly see which notes are being played

Great idea mediocre implementation. Set an option you phone doesn't support and it'll not work... Restart the program before changing it back and you get an "unsupported configuration" error and an instant quit, making it then unusable.

I was hoping for more versatility when selecting the different variables and such. I can't quite investigate a sound in the detail that I would like.

24k causes the audio on Samsung GSIII to fail. It could also benefit from a calibration option, like your frequency analyzer app. Also, a change in orientation option would be great to see a wider view of the frequency range, to help isolate problem frequencies. And saved settings are a must!

There are a lot of good voice print and spectral analysts apps out there for free but I personally feel it was worth the money to pay to zoom to a specific frequency range where the relevant data that I need is. Other free apps don't provide that feature as well as this program does. It's the best I've seen for that feature alone and It's the best we got on ANY mobile platform right now. You will need a good phone though for those high refresh rates, but it beats luging around a laptop and mic any day. :-D

I loved the free version, but the pro version is not worth what I paid, and there is no refund. If it had more options for LOWERING the sample frequency not just raising it, I would give it four or five starts. Not enough options to make it worth the money. Stick with the free version.

Would be better if it had more settings. I like the visual layout of this app more than others, but tha lack of settings like window size makes it less usful.

Basic but interesting app. I was hoping to be able to zoom in to arbitrary frequency ranges. Also logarithmic scale has an artifact in the middle of the scale, no matter what frequency range is selected.