'Racquet Tune' I've just downloaded this app and it is incredible!
 

Has anyone else used this app by Sten Kaiser? You tennis boffins will love it, it is so accurate....

Very good app worth the money.

Why isn't this available on android?

I would like to know this as well.

I use it to regularly check the stringbed. I usually just use the generic poly for string, so measurement isn't as accurate. Is there an updated list of string factors?

or windowsphone :(

no, this is very accurate.

The developer's argument is that it's better to develop an iphone package because of the differences in hardware with other operating systems.

Have it, pretty accurate in measuring tension loss but not actual tension. Too much work calibrating the correct string.

Or windows phone :(

This app is amazing and is a great tool for tension management.

I find it's about 12lbs less than what you have your racket strung at....
I had my rackets strung at 51,52 & 53 lbs and it registered at 39,40 & 41 lbs on my racquet tune.
How about you?

If you are using default string factors like most of us then it all depends on the properties of the string.

Using the proper settings it was one lb off - actually it might have been dead on because the racquet was strung at 35 lbs and Racquet Tune measured it at 34 lbs a week later

You racket probably lost more than 1 pound of tension just sitting there but I've never strung that low so who knows.

Very possibly. It was Solinco Tour bite 17 mains and Barb wire 17 crosses. I measured before I hit so I expect it to be even lower now. It's an 18 x 20 stringbed - not sure if that loses tension less quickly

Here is one of his videos before the iphone app (no phone needed) https://www.youtube.com/watch?v=-jXEZdM54GA

Thinking of getting the app for my iPhone, how much was it?

It is about dead on with a constant pull. On my neos it is about 3-4 lbs off of machine tension.

Spot on. Especially if you use it correctly (easy).

How do you add in the properties of a string?