There are plenty of apps besides Cleartune that do this; even some "hardware" tuners let you change the A4 calibration. Shop around....
Hi Tony,
Lee asked me to let you all know the tuning references...
E = 81hz
A = 108hz
D = 144hz
G = 192hz (in the sequence should be 189 but needs to be upped 3hz to fall into tune.)
B = 243hz
E = 324hz
The iPhone app we have been using is called cleartune.
You change the A4 calibration in the settings from 440hz to 432hz and away you go.