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This giveaway offer has been expired. TennisTension: Tennis Racquet's String Tension is now available on the regular basis.
• TennisTension is the FIRST WORKING mobile app that instantly measures the MOMENTOUS string tension of a tennis racquet with extreme consistency and accuracy (the error is less than 0.2 kg). Tracks the TENSION LOSS of the racquet's string all the time from the moment the racquet is strung. It records and analyzes the ringing sound heard from the strings when they are hit anywhere with any stiff object (pen, pencil, another racquet, fingernails, etc.).
• Systematically tested with different racquets and strings by players at a different level of play - from beginners to ATP professionals.
“TennisTension” mobile app measures the momentous average string tension between main and cross strings of a tennis racquet. It records and analyses the sound emitted from a vibrating racquet string when it is hit with any stiff object as a pen, pencil, another racquet, fingernails etc. Just in seconds, the app calculates the tension by using also the preset racquet, string, and stringer parameters.
It takes some time until the user of the App learns to produce proper “ringing” sound from the string. The string must stay close (2 to 10cm) and in front of the phone microphone. Hit the string lightly, anywhere on the stringbed with any stiff object as a pen, pencil, fingernails, another racquet, etc. once or twice and wait for a second to get the result. Do not touch the vibrating string with anything (e.g. fingers) during the measurement.
Recommendations: places with less surrounding noise are more suitable for easier tension measurements; remove any anti-vibration devices from the string.
Define all known racquet and string parameters. If some of them are not known and defined, the App uses average values.
Every different stringer puts different tension compared with another when they are told to put the same tension. Define the type of “Stringing”. For example, if the stringing machine is in a very good condition and/or the stringer is a very experienced one, then the user must choose “tight” or even “very tight” from the popup menu of the “Stringing” button.
Hybrid strings also can be measured. Go in the settings to switch on the mode “Hybrids“.
When all parameters are correctly preset, the accuracy is about 0.2kg.
The App calculates the average tension between mains and crosses. If a racquet is strung 24/23kg, then the shown result will be 23.5kg.
The “Tension Loss” can be measured and tracked from the moment the racquet is strung till it got broken. Often the app users are very surprised by the display of lower tensions than expected because of the “Tension Loss” negligence. It could reach 5_kg or even more.
A procedure called “Calibration” can be made for obtaining measurements with extreme accuracy of 0.1kg. The “Calibration” can be found and made going in the “Settings”. Read there the provided instructions.
When the “Calibration” is made and the “Calibrated” mode is used, the App considers COMPLETELY and SIMULTANEOUSLY all specific characteristics of every given racquet and string model. Then the accuracy is extremely high and is about just 0,1kg. Have in mind that the “Calibration“ takes into account the characteristics of the stringer by whom the racquet is strung, as every stringer actually puts different tension compared with others.
Use separate “Calibration” for different racquet/string model combination.
In a long term, by using “TennisTension”, every tennis player can improve his on court performance by choosing the right string and racquet model, the relevant string tension, adjusting it better with the playing conditions, understanding, tracking and coping with the “Tension Loss”, and adjusting faster to the way the different stringers string at various sites and tournaments.
Enjoy “TennisTension” and Good Luck!
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