The categories don't always make sense with what is displayed and then what the client actually sees.

For instance: Some "Timed (Longer Better)" exercises like Runner Stretch can only be entered in with reps not time by the trainer, which makes no sense. But then when the client actually enters what they did the option they see is to enter in seconds.

Another example where things don't line up well is with endurance exercises. While the trainer does get to choose between reps or time for endurance exercises, the client only sees reps regardless. So even though it would make sense to do time for an endurance exercise, the clients only option is to enter reps.

One other issue I've noticed with categories is in relation to the progression spreadsheet. The main issues seem to be with exercises performed for time. The only category where you can increase the time within the progression spreadsheet is for cardio exercises. That or it has to be an interval workout. The ability to increase time on other timed exercises within the progression spreadsheet would be very useful.