This app is for professional pipe organ builders and technicians. It addresses the special tuning needs of building and maintaining pipe organs.

Notable features:

* Covers the note range of C0 (32' pipe) to C9 (1/16' pipe)
* Handles mutation ranks (Quint, etc.) and Celeste ranks
* Built-in compensation to track temperature changes
* Calculates pipe cutoff for trimming new pipes to length
* Precision strobe-like display for very precise tuning
* Can be calibrated to an accuracy of 0.02 cents
* Provides many historical temperaments for period music
* Switches notes automatically up to 4 notes away
* Provides a versatile display of the frequency spectrum
* Wireless control of MIDI-enabled organs for key holding and stop selection using a Bluetooth MIDI adapter.

Organ Tuner has two different displays that are visible at once. One is the strobe-like Phase Display. This is a band where black squares move left or right. You tune to make the squares stop moving. The other is a frequency Spectrum Display. This is a graph that shows a peak for every pitch present in the sound. You tune to make a peak in the graph move to a central red line. Having both the Phase Display and the Spectrum Display visible at once gives you a more complete picture of the tuning than any single spinner-type or needle-type display.

There is an extensive built-in context-sensitive help system in the app. A detailed user's manual is also available at our support web page. You should download and read this manual before buying this app.