Workout
Thorough low impact exercises.
Yes, Yi Jin Jing App is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
Yi Jin Jing App is free.
To get estimated revenue of Yi Jin Jing App app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.
Thorough low impact exercises.