2025-07-13 00:00:00 Take your tennis game to the next level with RacketTension, the innovative Android application that measures the tension of your tennis racket's strings with extreme consistency and accuracy. Designed for both beginners and pros, this app is a must-have for any serious tennis player who wants to optimize their performance and prolong their racket's lifespan. RacketTension instantly measures the string tension of a tennis racket with extreme consistency and accuracy. It records and analyzes the ringing sound emitted from the strings when they are hit with another racket or fingernails. With our user-friendly interface, you can easily measure your racket's string tension in just a few simple steps. It takes some time until the user of the app learns to produce a 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 such as a pen, pencil, fingernails, another racket, 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. Watch the video for demonstration. RacketTension is compatible with most Android devices and accessories and is economical, saving you money in the long run. By avoiding too high or too low tension, you can prolong your racket's lifespan and save yourself the cost of a replacement. Places with less surrounding noise are more suitable for easier tension measurements. Remove any anti-vibration devices from the string for accurate measurements. When parameters are correctly preset, the accuracy is about 0.2kg.