"There are plenty of capable tuning apps out there. Indeed, even Google has built one in to its search engine. However, new iOS app PitchSlap aims to offer players more than just tuning, incorporating an intonation tool and the ability to store and edit tunings for all of your instruments.

The most intriguing and unique feature of the app is the ability to use it to analyse your guitar’s intonation. It does this by recording a sequence of you playing all the notes on the fretboard and creating a graphical representation of your instrument’s intonation."


https://www.guitarworld.com/news/pitchslap-intonation-app

Bob
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http://soundcloud.com/bobcflatpicke/music-in-the-mountains