"Perhaps no other method for training athletes is more important than letting the climber see what they are doing. A coach’s words have a limited effect when an athlete is pumped with adrenaline. But seeing is believing and video may just be the best way to improve a climber’s performance."
you don't even need to be a coach, an excellent way to self coach. Any other apps that you know of? Does anyone know of good examples of these apps being used in practice?
Update: here's a sample recording.