PaceSmith Pro

PaceSmith Pro is a frame pacing analyzer for game developers.

Microstutter is invisible in FPS averages. PaceSmith imports frame-time captures — paste, file, or the built-in 10-second recorder snippet — and diagnoses exactly which frames are wrong and why: a frame-time graph with jank highlighting, p1 / p50 / p99 / p99.9 percentiles, dropped/duplicate frame classification, and a ranked diagnosis engine that names the hitch family (periodic GC-style hitches, asset bursts, shader-compile spikes, half-rate vsync, 3:2 judder, thermal drift) with fix recommendations ranked by impact. Use before/after compare to verify your fix actually worked.

Pro includes everything, with no limits: unlimited frame-time captures, before/after compare, and all exporters (annotated PNG, flagged-frames CSV, markdown report).

Runs 100% locally in your browser and works fully offline. Single download, nothing to install. One-time purchase — yours forever.

Not sure yet? Try the free PaceSmith demo first: https://theluckyduck666.itch.io/pacesmith