AudioSpeedGun: Smart Tennis Serve RadarMeasure your serve speed using just your smartphone! It analyzes audio to calculate the time between racket impact and wall hit.Using physics-based air resistance, it estimates both Muzzle Velocity ($V_0$) and Terminal Velocity ($V_{end}$). No expensive radar guns—just your phone.Core measurement is free. Upgrade to the paid version for data saving, history logs, and manual waveform analysis. Perfect for tracking progress during solo wall-practice!
