This tab is where you record, save, and open existing Intonation profiles. 

Start/Stop Button

Press Start to start recording a new Intonation Profile. If you haven’t closed the current profile, pressing Start will continue recording to the current profile, adding any new notes you play to the chart.

While recording, this button changes to Stop. Just press Stop when you’ve finished playing.

Close/Save/Open button

Press Close when you want to close the current Intonation Profile and create a new one or open an existing one.

If you’ve just completed a new profile or added to the current one, you’ll be prompted to save it to your device.

Intonation Profile

This is a chart that shows the tuning and consistency for each pitch that you’ve played. The grey bar is the average tuning over all the times that pitch was played. The yellow bounds bar (that looks like a capital I) shows the sharpest and flattest notes of that pitch that you played. A short ‘I’, where the top and bottom are close together shows good note consistency, because you played that pitch with nearly the same tuning each time. A long ‘I’ shows poor note consistency – because the pitch was played several times with different tuning – but it doesn’t mean your playing was bad. For more information, see Understanding the Intonation Profile Chart.

Instrument Key

Flutes, oboes, guitars and violins are all in Concert Pitch, which means that a C played on a flute is the same pitch as a C played on a piano. But many instruments, such as clarinets, trumpets and saxophones play in a different key. For example, a C played on a B♭ clarinet is the same pitch as a B♭ played on the piano. If your instrument is not in Concert Pitch, you’ll want to set the Instrument Key to be the same as your instrument, so that the pitches you see on the Intonation profile have the same names as the ones you played.

You can set the instrument key using the Settings Tab at the bottom, but you also can set it by tapping on the ‘Key: C’ at the top left of the screen. You’ll see a Key picker – just select the appropriate key for your instrument, then press ‘Back’.



Intonation Station allows you to choose between Equal Temperament and Just Temperament (also known as Natural Temperament). Keyboards and guitars are tuned to Equal Temperament, whereas string quartets would normally tune to Just Temperament. Just Temperament sounds more in tune – especially for low notes – but it only works in one key: the Root Key. If the music changes key, a different set of frequencies is used to specify each pitch. Hence, when you select Just Temperament, you also need to specify the Root Key. For more on Temperament, see About Intonation.

Use the Settings tab to switch between Equal Temperament and Just Temperament.

Details Menu

When you’ve finished recording your Intonation Profile, Intonation Station can provide an analysis that helps you pinpoint any problem areas of your instrument, or particular pitches you need to work on. It also provides further charts that reveal additional information about your playing.

To see the detailed analysis, tap ‘Details’.

Managing your Intonation Profiles

You can store any Intonation Profiles you’ve created on your device, and retrieve them whenever you wish. You don’t need to explicitly save your profile. Intonation Station will always prompt you to save any new profiles whenever you tap Close. You’ll also get prompted to save any existing profiles that you’ve modified, either by recording new notes, or by changing any settings that affect it.

Storing your current Intonation Profile

When you’ve finished looking your current Intonation Profile, tap the Close button. You’ll be prompted to save the Intonation Profile to your device:

Intonation Station chooses a generic filename for you, based on the Date and Time. Replace this with a filename that reflects the instrument or the passage you played:


Press Yes to save the profile to your device.

Press No if you don’t wish to keep this profile.

Press Cancel if you don’t want to close your current profile yet.

Opening a stored Intonation Profile

Once you’ve closed your current Intonation Profile, your main screen will show a blank chart:

If you have any profiles stored on your device, the main screen will show an Open button at the lower right. Tap the Open button to see a list of stored profiles:

Just tap the name of the Intonation Profile you want to open. If you don’t want to open any of them, just press Cancel.

Deleting a stored Intonation Profile

You can delete any Intonation Profiles you no longer need. Just tap Edit, at the top right, and some red Delete Icons will appear next to each stored profile:

Tap the delete icon next to the profile you want to delete:

then tap Delete to remove the profile from your device. Press Done when you’ve removed all the profiles you no longer need.

Saved Settings

When you store an Intonation Profile to your device, any current settings that affect that profile are also stored with it, so that it looks the same as when you last saved it. The settings saved are: