Buttons are far too small, but otherwise great app

Ive used this app to track down the source of high pitched whining noises in my office (multiple power supply issues in the past few years!) and graph sonic differences in musical instruments (comparing overtones and white noise levels between woodwinds).

Very useful app, and its a lot of fun to play with. I just wish the user interface wasnt so difficult to use on the iPhone. I have decent dexterity (small enough thumbs to type fast and reliably, at least before iOS7!), but the buttons are incredibly difficult to touch. The interface is in desperate need of a stylistic and usability overhaul, but otherwise its a great utility.

Iaian7 about Spectrogram Pro (with super-smooth 60Hz update)