Only one suggestion
This is a fantastic app. As it stands it seems you can’t have any music playing with this app. I hope that will be ironed out in an update as I think many like training with music.
Not enough ratings yet to assess Shadow Fighting Workout Challenge.
Shadow Fighting Workout Challenge - Get stronger appears to be a legitimate app. AppsHunter Legitimacy Score for Shadow Fighting Workout Challenge is 80/100.
Based on 80 of 100 points across 7 verification signals from App Store and developer data.