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It seems that the iPhone has become an excellent diagnostic tool through sound badysis. It not only badesses the watermelon's state of maturity, but also measures the tension of tennis strings or squash rackets with the racquetTune application.
The $ 1 app features a smooth, sleek interface that displays the tension of a string after a few taps; A live weight calculator has also been added.
The Swedish developers claim that racquetTune has been tested at the Royal Institute of Technology in Stockholm and has worked well – who knows, maybe even Bjorn Borg himself.
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