How do metric overlays work on an exercise chart?

A metric overlay draws a second line on an exercise’s chart, so you can watch two numbers move together. One example is estimated one-rep max (1RM) next to total volume for the same lift.

To add one, open Stats, go to the Exercises tab and pick an exercise. Tap Compare on the chart, then choose the second metric from the list.

The two metrics often use different units, so Kinoku rescales both. Each line starts at 100 on the first day where both have a value above zero, and later points show the change from that day. Days you did not log stay empty, because Kinoku never fills a gap with a zero or a made-up value. A rising line means that number went up, which is not always the same as better training.

The ⋮ menu next to the two metric names holds three choices. Change picks a different second metric, Swap overlay metrics makes the second metric the main one, and Remove metric overlay takes the second line away. On a narrow screen or with large text, the same menu also holds About metric overlays, which explains how to read the chart. Kinoku remembers your pair for each exercise.

Metric overlays are part of Pro. On the free plan, the Compare button shows a preview of the chart.