I have exercises like pullups that have reps but no weight. When it loads the exercise to show me my sets, if I immediately click into a lower set to add my reps, then the app freezes. If I first click into the weight box of the first set, then click into the rep box of the later set that I am attempting to enter, it will not freeze.
It happens very consistently and specifically with exercises that do not have weight. I have to reboot the app 3 to 4 times per workout when I do not remember to first click into the weight box of the first set before attempting to update the reps of the later set.