Often misses repetitions even when they are spot on. Needs to be more customisable; if you miss a day or put an extra day in or chose a different programme it does not record it. Some of the instructors just read out the exercises rather than work with you as per an instructor in a gym. Some are too fast to alter weights etc. It would be good to program more specific workouts e.g heavy weights fewer reps; this is all set out and cannot be changed. Overall it is good, would just like more option