Shadow Boxing Workout App is a free iPhone app developed by Marc Gauthier to help you improve your boxing skills. Whether you're a beginner or an experienced boxer, this app offers a wide range of exercises to choose from, including shadow boxing, punching bag workouts, and calisthenics exercises.

The app's pre-made shadow boxing and punching bag workouts are intense and challenging, with options for both beginners and advanced boxers. You can also create your custom workouts and HIIT sessions to match your fitness regimen and goals. The app features a variety of exercises, including pad work, freestyle, repetitions, punching bag, defense, footwork, tutorial, dodge, body shots, doubling punches, long combos, and counter punching.

The app also includes a free timer for your sparring sessions, training, or heavy bag workouts, with pre-made timer modes for boxing, MMA, muay thaï, kickboxing, or amateur boxing. The audio cues will not stop the music from your favorite app, and you can set up the audio mixing to lower the music or keep the volume all the way up. Finally, your workouts are automatically saved to iCloud, so you never lose track of your progress. Overall, Shadow Boxing Workout App is a great way to improve your boxing skills and stay motivated while working out.