Originally Posted by bbulla
There are too many factors to consider for a micropohone on an iPod to accurately measure tension. As UCSF2012 eluded to in an ealier post. Head size, string type, gauge of string, density of string pattern, racquet material, head shape....the list could go on. All of these will have a different effect on the 'sound' of the strings resonating in the racquet....which is how this app is measuring tension.
But yet the app has settings for headsize, string type and gauge.
If it didnt work, then I guess I am lucky because if I string at 50/53 it always pings out at 51.5 or 52.
Also, once you have a reference tone, you can still measure tension loss, which is the main benefit of the app.