Read how Montal Tuner is designed to be used with VoiceOver and headphones.
The Normal Tuning Procedure is found here. The items on the main tuning screen are as follows:
At the top of the main tuning screen are fields displaying the currently selected note and the currently selected partial. You can select these fields at any time to find out what note and partial are selected. When the note or partial are changed, VoiceOver will announce the change immediately without your having to touch the field.
On the left side of the screen, there are labels that tell
the offset in cents
the measured tuning error in cents
the currently loaded tuning file
the current target frequency in Hz
the current setting for automatic note switching
the tuning curve stretch for the current note
the over-pull, if any, for the current note
To the right of those labels, there are three buttons:
On the right side of the screen, there are three slider-like controls:
Below these controls is a button to turn auto note switching on and off.
Below all these buttons and controls there is a status display field that usually is hidden. It has various uses for special operations. For example, it displays the fact that an inharmonicity measurement is in progress. It is rarely necessary to touch this field explicitly, because the states that it describes are announced automatically by VoiceOver when they are begun.
From the main tuning screen you can quickly get to the Settings screen by using the two-fingered Zee-gesture, also called the escape gesture. You can also get to the Settings screen by activating the large Settings button at the bottom of the screen. This button is full width and easy to find by feel without scrolling through all the items on the screen.