PREV Column
The PREV column in the set list shows what you did for that set the previous time you performed this exercise, as weight × reps. For example, 60×8 means 60 lbs for 8 reps.
It is there so you can compare today’s set with last time’s at a glance. You can hide the column with Show PREV in the Exercise Layout settings.
Where to see it in the app
Section titled “Where to see it in the app”- Workout Session View and Workout Exercise View — the second column of every set row