RacketMeter

Easily measure badminton racquet string tension. Just tap the strings firmly on your palm 2-3 times. Racket Meter works well on all types of badminton rackets (Oval and Isometric). It is accurate for measuring racket string tension between 18-35 pounds. A must have tool for all badminton players. The app listens to the sound made by your racket's strings when you tap on them with your hand.
Racket Meter can help you find the best tension suitable for you which will tune up your game. It can also help you decide when it's time for restringing. If you have a lot of rackets, this app will help you choose the one with suitable string tension.
String jobs are expensive and Racket Meter will help you check whether your stringer did a good job.