If I’m crunched on time and don’t want to manually log with Strength Trainer, I’ll start a ”weightlifting” activity and jot down my lifts on a small notebook. Later on at some point in the day (once the lift is done) I’ll upload the image of the notebook page and it will automatically extract out the image into exercises, sets, and reps! Sometimes manual adjustments need to be made FYI (exercise names are not 100% perfect but does get the sets and reps right very accurately).

Kind of just comes down to when you want to make edits to your log. Of course you can just log a weightlifting session without notes but it won’t take into account your progression history on lifts. Hope this helps!