Garmin Impact is a free iPhone app developed by Garmin International, designed to interface with the Impact bat swing sensor. The app provides real-time analysis of five key swing metrics, offers personalized coaching tips, and allows for video analysis of swings. Users can create player profiles, compare performance metrics, and receive tailored drills for improvement.

With Garmin Impact, users can view detailed swing data, including bat speed, hand speed, time to impact, elevation angle, and attack angle after each swing. The app offers coaching tips and drills developed in collaboration with professional hitting coaches to enhance swing performance. By capturing swing videos and analyzing them alongside swing metrics, players and coaches can gain a comprehensive understanding of swing dynamics and make necessary adjustments for improvement.