What’s New

Version 2.3

New features in 2.3
* iPhone X compatible user interface
* Added Privacy Policy for the app
* Ability to refresh spectrogram during recording and playback
* Ability to set the minimum and maximum scale value of spectrogram and spectrum analyser view (in both linear and log scale)
* Ability to set recording filename - recording filename can now have incremental suffix or date/time suffix
* File names of image snapshots and data snapshots that are generated from playback are named according to the playback filename which makes it easier to identify the file.
* Ability to access all the recordings, image snapshot and data snapshot from "Files" app (available from iOS 11)

* Updated to latest SDK and fixed user interface issues
* iOS 9.0 and above compatibility issues addressed (including file open issue)

Ratings and Reviews

4.9 out of 5
9 Ratings

9 Ratings

JJN1001 ,

Superb tool and vary useful.

I’ve been using this tool to help balance the sound on my Home Cinema System. It does a great job.
Thank you :)

nitereviewer ,

Great app

Helped me identify the low pitched electrical sound that has been bothering me at night. Great app

robinhow ,

Great app for v1.0...

It's great that this is being offered for free.

Love the ability to change the FFT size and sample rate.

It would benefit from an auto read out of the highest amplitude frequency on the Spectrum Analyser (with the ability to highlight the range for analysis of that readout, or High Pass Filter the read out's data). This would help to identify the predominant frequency (but allow you to ignore, say a low rumble).

It would be good also to be able to adjust the colour range for the spectrogram. Perhaps drag the "Scale" in order for it to display something useful in quiet environments. Or have an "Auto Range" button which samples the sound for, say, 2 seconds and then sets the "red" amplitude to just below what it has just measured.

Having said that, what this does it does very well and will be a keeper on my 3GS :D Nice one!!!


Oxford Wave Research Ltd.
19.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© (C) 2017 Oxford Wave Research Ltd.
In-App Purchases
  1. Enable Log Scale £1.99
  2. Disable recording length limit £1.99
  3. Enable pinch to zoom £1.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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