SweetSpot: Racket Tension

Measure badminton string tension with your iPhone.

SweetSpot listens to the sound of your racket strings and estimates tension from the vibration frequency. It helps you check a fresh restring, compare rackets, and see when your strings are starting to lose their feel.

Why players use SweetSpot:
• Estimate string tension in seconds
• Track tension history for each racket
• Save racket profiles with string gauge and head shape
• Compare readings after restrings and between sessions
• Get guided tap detection for cleaner measurements
• No separate tension meter required

Built for badminton players, coaches, and stringers who want a quick way to monitor racket setup.

For best results, measure in a quiet room, use the correct string gauge, and compare readings over time on the same racket.