2 Apps in This Bundle



Two unique apps for testing and customizing your racquets.

RacquetTune ensures that your racquet is ideally suited to your style of play. Simple and straightforward to use, the app uses the sound generated by tapping the strings to calculate the tension with high accuracy. In addition, the interactive swingweight calculator aids in customizing your racquet to fit your own stroke pattern, while the stiffness calculator allows you to simulate different racquet configurations.

RacquetTune not only makes it easier to decide when it is time to restring, it is also an invaluable tool when testing different racquets and strings and in identifying which of your racquets is best suited for different types of games. RacquetTune also allows you to check whether your stringer is consistent in his work.
RacquetTune includes the following user-friendly tools:

With SwingTool you can quickly and easily measure the swingweight of tennis racquets, golf clubs, baseball bats etc. Swingweight is the most important parameter when deciding how a racquet, club or bat feels when you swing it. Unfortunately measuring swing weight has been fairly complicated, until now. With SwingTool it is enough to just hang your equipment and let it swing like a pendulum. Place the iPhone/iPad close to the swinging end and it will automatically display the swingweight. The measured swingweight can then be used in RacquetTune for further analysis and customization.

RacquetTune has been featured in tennis magazines in USA, Italy, France, Germany, Sweden and Norway.

"RacquetTune is very, very impressive. I get more tension diagnostic questions than just about anybody in the universe, so this is a very good thing to be able to recommend."
Jonathan Wolfe
US Racquet Stringers Association


Sten Kaiser
4.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Japanese, Spanish
Age Rating
Rated 4+
© Kaiser&Kaiser
App Bundle $3.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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