Nine strands run along one edge of the desktop: their envelope is CPU, their fill is memory pressure, and the colour runs green to red as the machine works — the last quarter of an hour, always in view. Hover any point and it says what was running then, naming the process if one was hogging it. 0.33% of one core, 14 MB, no permissions, and it stops sampling when the band is covered. Free and MIT, macOS 14+; the first launch needs Open Anyway, since the build isn’t notarised.