What's New

This app has been updated by Apple to display the Apple Watch app icon.

The method which was playing a sound file was abolished, and the reference tone was changed so that I might rumble by a square wave.

App Description

This is a tuner for open-code tuning of a guitar.
You choose an open-code on a memu, and push a tuning fork button.
The head of a guitar appears and six sound is displayed.
The head of a guitar has two kinds and you can change it.
Letter names are buttons.
If a button is pushed, sound will sound for 12 seconds.

iPhone Screenshots

(click to enlarge)

openTunes screenshot 1 openTunes screenshot 2 openTunes screenshot 3

App Changes

  • December 16, 2011 New version 1.1
  • May 25, 2012 New version 1.2
  • July 11, 2012 New version 1.3
  • June 15, 2019 New version 1.6