What’s New

Version 1.2.5

Thank you for helping us improve FFT Plot app! Please rate it on the App Store now, so we can make it even better!

● Toggle between Flat, A and C weighted modes

Ratings and Reviews

4.7 out of 5
75 Ratings

75 Ratings

luckyjayguy ,

I really like this app!

I used it to diagnose a whistle sound in an air handling unit. It works quite well and I have told several other people about it. I use an iPhone 5 and when you take a screen shot and upload it to your computer, it looks very professional.

The other features are very nice, too. My only suggestion is to allow zooming in on the Hertz scale.

Mister_Coke ,


I use this app when I'm performing the final tuning in car audio systems and I'm impressed with the response and resolution it has. It could be better if it supported external microphones such as ZOOM's XY and omni capsules but performs pretty reliably through the iPhone's internal microphone. And fairly accurate up against my ARC software in my recording studio studio. Well worth the money if you need a good FFT

Elvenmimstrel ,

Favorite fee app

As a studio engineer who has to run live sound a few times a year, this app saves me a lot of trouble. I can ring out mics in a heartbeat and solve problems more quickly on the fly. No more sweeping for the exact frequency to notch, or for where to center the de-esser! It’s especially handy on an iPad with its larger display.


7.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.

Age Rating
Rated 4+
© 2018 ONYX Apps


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