Set a barbell or suspension strap at about waist height. Lie underneath with your body straight and heels on the floor. Grab the bar with an overhand grip slightly wider than shoulder-width. Brace your core and pull your chest up toward the bar, squeezing shoulder blades together. Pause, then lower yourself back down with control. Repeat for reps.
Log your inverted row sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.