This is an analyzer for sound, vibration and magnetic field. Overall we have the following measuring functions.

* Spectrum Analyzer (sound / vibration)
* Scope (sound / vibration / magnetic field)
* RMS value view (sound / vibration / magnetic field)
* Simple Signal Generator (sound)

Pinching (zooming) and scrolling are supported on most of all measurement screens except for RTA mode. You can also pause by tapping the measurement screen. Since the measurement time is displayed at the time of pause, it is suitable for leaving as evidence. Please take a screenshot of the screen in the system standard way.

[Application example]
· Record the present situation as quantitative evidence, such as by using recording and use it for the improvement of obstacles.
· Use it for science education.
· Use it along with the sweep generator to improve the acoustic characteristics of the listening room.
Octave RTA (real-time analyzer) has two configurable items, Please use "Settings .app" and change the following as necessary.
· Window function
· Latency

This application has an audio signal oscillation function, and depending on the operation it may generate sound that is harmful to the human body, so please refrain from using things like headphones or headsets. We are not responsible for damage caused by using that equipment.

The resolution of the spectrum analysis of speech is about 11 Hz inherent, however, the actual resolution is in the maximum of 3 Hz by interpolation processing. It is not the accuracy that can be used to tune an instrument. Please use the instrument tuning application for that purpose.

If you can not find the current point by zooming in or scrolling, you can return to the default state that you can see the whole picture by pressing and holding the measurement screen long.

If a remarkable peak near 1 Hz lasts for more than 10 seconds from the beginning of the spectrum analysis results. It will ignore the peak below 1 Hz after 10 seconds. In most cases, this might happen when the accelerometer is dull.

For a good result with Octave RTA, we recommend using Window Function and Fast Latency Mode.

What’s New

Version 1.5.5

We have improved the pinch operation which was conventionally extremely inconvenient.
Removed ads.

Ratings and Reviews

4.6 out of 5
501 Ratings
501 Ratings
yTunesMusic ,

Adds another amazing tool to your iPhone ! 🤫Get it!

Db Meyer, XYZ vibration meter. Oscilloscope. Frequency meter. Magnetic feild meter. And that’s not even half of the functions. I often do field recording work and this app is quick and easy because my phone is already in my hand recording. Eliminates gear. I even think it told me “I love you” JK it did and it high 5 me.
Thanks extremely smart people on the other side of this message. No adds and free....😯😧💩

Developer Response ,

Thank you so much!

staufferjr ,

Fantastic app

This does everything I wanted. Time in milliseconds on x axis with waveform.
You can pinch the scales to change the scale of x and y axis.
Has a lot more features that I do not fully understand.
If there was a user manual I could say more, but I do not know what all the screen symbols are.

Developer Response ,

Thank you so much!!

PussKrook ,

At Least it's Free

This app was not developed for users who want accurate measurements. It might be fun for kids or laymen to play around with — worthy of two stars. It doesn't have a menu or the option to adjust settings, but it does have annoying advertisement banners. Download with low expectations and you won't be terribly disappointed — at least it's free.


Takuji Matsugaki
5.8 MB

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


English, Chinese, Japanese, Simplified Chinese, Traditional Chinese

Age Rating
Rated 4+
© Rikki Cat


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like