Each exercise has a set of indicators and parameters that help to track progress. Examples: one repetition maximum, pace, total weight lifted, heart rate, calories burned, etc. Below is a gallery that shows the main features related to such kinds of data.
All the metrics and their meaning are quite transparent, but just in case, a couple of words about 1RM. 1RM is an estimate of the maximum amount of weight that a person can lift for one repetition. For up to 8 repetitions, we use the Brzycki formula, and for more than 10 reps, we use the Epley formula. For 9 reps, that's 50-50.