What is the arrow next to a weight or rep?

It compares that set with the same set the last time you did the exercise. Set 2 is compared with set 2, set 3 with set 3.

A down arrow shows only when Kovo chose to go lighter. It is there so you know the lighter weight was on purpose.

A smaller number does not always get an arrow. If your reps are lower because the weight went up, that is not a step back, so Kovo leaves the arrow off.

Learn more: How does Kovo pick my weights?