◆ In-browser · nothing uploaded

Overlay every module's telemetry on one axis.

Drop in Emit, Excel, or Caterpillar datalogs from any number of modules and see them together on a single time axis. Measure, annotate, align, and scale — all parsed privately in your browser. No install, no server, no data leaving your machine.

Try the live demo — free See pricing

The demo runs on built-in sample telemetry. Buy a license to load your own logs.

overtrace.app/app

Overtrace overlaying five telemetry channels from two modules on one time axis

Built for people who read datalogs for a living

Every feature exists to answer one question faster: what actually happened, and when?

Your data never leaves the browser

Files are parsed entirely on your machine with local JavaScript. That's not a marketing line — it's the architecture. There is no upload endpoint.

Try it now, buy when it earns its keep

Open the app and play with real sample telemetry — measure tools, overlays, alignment, the works. When you're ready to load your own logs, a one-time license unlocks uploads forever.

Open the demo Pricing & licenses