FPVTune helps FPV drone pilots analyze Betaflight blackbox logs and turn real flight data into practical PID, filter, and feedforward tuning guidance. Pilots upload a .BBL or .BFL log with their current CLI dump, then review gyro noise, resonance peaks, D-term behavior, prop wash recovery, filtering delay, and motor heat risk. It is useful after firmware updates, frame changes, motor or prop swaps, crash repairs, or any build where copied presets do not match the aircraft.