Vocal On Stave - pitch & scale check


Support tool for improving your singing voice!

"Vocal On Stave" gives you valuable visual feedback on your vocal pitch.

You just sing into the built-in microphone on your iPhone, and it graphs the estimated vocal pitch on the stave.

It will assist you visually for training your a cappella vocals and practice of Passaggio.

On sing a song, what recognize your pitch on scales? Working on scales is an important part of learning how to control your vocal, developing your voice and keeping your voicing in good shape.

Please use this app to improve the ability for your singing.

The latest version adds the auxiliary line display feature.

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Please to click the following link to download "Vocal On Stave" from App StoreTM. It will be open the download page on App StoreTM.

It will move to another site, download from Aplle Store

Communications charges when connecting to the App Store will be borne by the customer.
iPhone, AirPlay is a trademark of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.

Products Information

Version : 2.1
Release date : March 26, 2021. UTC
Size : 2.8 MB
Category : Music, Education
Recommendation : Requires iOS 12.5 or later.


"Vocal On Stave" has the following features:

Vocal analysis and pitch estimation for human voice.
Display ranges: 4 octave (up to C6 from A2)
Sensitivity level: 0 (Low) - 10 (High)
Pitch analysis display can be scrolled back in the time axis.
Automatic stop up to 60 seconds
Auxiliary line display function.

Sound Analysis

This app analyzes the frequency spectrum included in the singing voice and displays the basic vocal pitch in a graph in real time. At the same time, the note name is also displayed.

The sound analysis is for human singing and only for single vocals. Vocals with chorus or accompaniment, instrumental performances, or noisy sound environments cannot be displayed correctly. The same is true for very short utterances and breathing.


Top view

This is Top view of this app.

The upper part has Trace display that displays the results of sound analysis, and the lower part has an Info (i) button, START/STOP button, Sensitivity Level slider and auxiliary line display button.


The access permission to the microphone will be confirmed from the iOS system at the first start-up. Please enable access to the microphone.


Basic Operation

The basic operation of this app is very simple, just tap START button. If necessary, adjust the sensitivity level according to the volume of your singing voice.


It starts or stops sound analysis. It analyzes the sound in real time and displays the vocal pitch. It stops automatically in up to 1 minute.

Sensitivity Level

It adjusts the sound level to your singing voice. First, it starts the sound analysis by tapping START button. In addition, while singing, you tune the microphone input sensitivity with the Sensitivity Level slider. If improper settings are made, Trace display may not be displayed or erroneous judgment may occur. Also, it may be misjudged by sudden tone fluctuation or lip noise. Adjust it to the appropriate sensitivity level so that the pitch detection is displayed continuously.

Trace Display

It displays sound analysis results. After the analysis has stopped, you can scroll the time axis to display the analysis results for the past time by swiping Trace display to the right.

Auxiliary line display

It shows the auxiliary lines on the stave in Trace display.

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Tap "i" button, it will be displayed on usage method, product information. Tap "i" button again, it returns to Top view.



Version 2.1 was released on March 26, 2021.
Version 2.0 was released on September 6, 2020.
Version 1.0 was released on December 28, 2019.


This app is intended primarily for single vocal and human voice. Note that the correct display can not be done in case of chorus, vocal with musical instruments, and the noisy environment. Recommended for use in a quiet room less ambient noise as much as possible.
Adjust the input level by sliding “Sensitivity level” bar while singing. If the setting is inappropriate, the graph may not be displayed or a misjudgment may occur.
At the time of the first access to microphone after installing the app, you will be asked permission to access them from the iOS. If you did not enable this setting on this time, it can not be access from the app by privacy restrictions of the iOS. Please enable slide switch of the app in the access permission of the iOS setting, "Settings > Privacy > Microphone".

Request for review

Please send a review of your comments and requests for this app. We will use your review to improve our products. Thank you for your cooperation.

It will move to AppStore Please send a review message for "Vocal On Stave"

Please fill in your review by accessing from iOS device.

Contact us

Inquire about this app please from below!

Support contact : support_ap*

(NOTE: Please change the star mark, * of this e-mail address to the at sign, @. The display of our support e-mail address has been changed to prevent spam. Please change to the correct address and send e-mail. )

Please contact us with the following details if you have any requests or problems.

1. Application name
2. Device model
3. iOS version
4. Country you live
5. Details about your requests or problems.

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