The British Steelies Society

It's on offer.
£6.99.
No leads needed.
Works perfectly.

Here are my settings, for Newman.

iPad Peterson Steel Guitar Tuning as per Jeff Newman Preset

F# =   +6
Eb =   -5
G# =  -3.5
E    =   +10
B    =   +8
G# =   -3.5
F# =   +6
E    =   +10
D    =   +6
B    =   +8

It's been tested with a Peterson rack tuner so I think it's pretty accurate.

I think the iPhone tuner is the same, as long as it shows the cents....

Ignore the strobe.....

Brilliant app...