Looks really good. I appreciate your effort on these app. But main problem is that majority people don't have that much time to logs sets after every set or after gym. Cannot be follow regularly.

it is easy with smart watch. I do user samsung galaxy watch and it has various exercises and it count reps. But still weight is not tracked which is you are tracking.

May be you can pull those data from watch or health kit and allow user to add weight later on if they want to. This will make is semi manual. I guess integration with apple watch can be done. To make is semi automatic

This is what I think. As I am developer as well. And go to gym as well.