With your personal app you always have your Kroftstodl with you. Comprehensive features for your fitness experience. This is how you become a real #stierherndlbiaga. - easy registration for group trainings & events - Videos, tips & news on strength training, nutrition & motivation - your check-in & check-out statistics - Very convenient upgrade and downgrade of your membership - your monthly bills simply on your mobile phone - your discounts at a glance - your fitness blog always with you Your