ShaftCPM

ShaftCPM is a spectrum analyzer that measures a golf shaft's natural frequency in CPM (cycles per minute) in real time. You don't attach your phone to the club. Clamp the club to the edge of a desk, lay your iPhone flat on the desk, pluck the shaft, and tap Start. The frequency appears as a large number and a graph. Because nothing is attached to the club, its mass doesn't lower the frequency, giving good absolute accuracy. ■ Features ・Real-time CPM: analyzes the shaft's vibration and shows the natural frequency in large type. ・Spectrum & peak detection: plots the vibration spectrum and automatically detects the peak (natural frequency), with an approximate ± range. ・Desk-placement method: nothing is attached to the club, so its mass doesn't lower the reading. ・Portrait & landscape layouts. ・Japanese / English, following your device language. ■ Great for ・Comparing how stiff or soft…