Spectrogram Pro (with super-smooth 60Hz update) app for iPhone and iPad

Good colour for intensity indication, quick and fluid graph. Most apps do basically the same things as this and they cost much more. It doesnt stand, just rotates to the sides, but this is a minor issue. The only reason I didnt give it a 5/5 is because of its misleading number indicator on the notes when you touch on the scale to see the frequency and tones. The frequencies and the tones are correct, but the number of the notes, in 74% of the cases, arent. For example, C1 should be 32,70Hz instead of 65,41Hz which is C2. Every C is wrong and every other note is right until the place where it should start the 5th notes. Instead, the 4th notes are repeated in this region. And, from the 5th and on, all the notes are wrongly numbered. Besides that, this is still a great app, really recommend it. I just hope this problem gets fixed. Cheers.

Would be nice to have more marks on the frequency scale or the ability to zoom in a region of interest. The marks in the higher frequencies can span hundreds or thousands of Hertz which is not very helpful. Five stars if you can add this feature

Had to say it! Ive been really impressed with all the apps this developer has made. His standard of quality is very high. We should support the people who put a lot of care into their work just like we do with Apple.

The spectroscope, plus the sonogram on same screen with real time... perfect. Ability to drag a guide with note frequency? Even better... Im using it with a cheap USB audio interface to viz my HW synths... If this could sit in audio bus, that would be really cool..

It works, but could use a scale feature. Crashes when I try to save a picture - use screenshot hotkey as a workaround.

Not good for much except pretty interface. No technical utility until developer fixes crash on save and allows export of files. Birders could really find this useful for ID of species if dev addresses these issues. Fine potential not yet realized.

Very precise, it even shows the overtones perfectly. Excellent for analyzing frequencies of individual tracks in a mix. Its also quite fun to "see" all the sounds around you. I knew there was something electronic ringing in my bedroom that was annoying the heck out of me, and I found it with this app! Well worth the price.

Nice app. But I wish it was able to process songs and voices from the iPod not just the mic!

Its fun watch the display while it analyzes music, speech or other sounds. You can demonstrate how the harmonics of two tones align to make a pleasing chord. I wish the pause button was easier to hit and that the capture image menu didnt pop up so easily. But overall a good set of options for colors and sampling parameters.

You cant record? Well there goes 4 bucks down the drain. Merry Christmas.