RaceChrono

Track day timing and telemetry made precise and effortless

RaceChrono turns your device into a capable motorsports data hub, replacing bulky lap timers and standalone loggers with a single, track-focused solution. Whether you’re lapping in a car, bike or kart, it delivers accurate timing, clear feedback and powerful analysis tools that feel very close to what the pros use.

The app’s core is its lap timing system, with sectors, best split indication and an “optimal lap” calculation that shows the theoretical fastest time you could achieve from your best sectors. A built‑in library of more than 2,600 tracks means most circuits and popular special stages are available out of the box, and you can also define your own layouts for private tracks or hillclimbs.

Where RaceChrono stands out is in its data analysis. Sessions are shown on a smoothly scrolling timeline, synchronizing speed, acceleration and GPS traces with your route on the map. Opt for the advanced features and you unlock predictive lap timing, time delta graphs and rich video integration: recording with the internal camera or syncing footage from action cameras, then exporting hardware‑accelerated videos with customizable overlays and even picture‑in‑picture from multiple cameras.

Support for external GPS receivers, OBD‑II adapters and heart rate monitors further elevates the experience, giving you much higher accuracy and extra channels like RPM, throttle position and driver effort. Data export to formats such as CSV, NMEA and VBO allows deeper offline analysis with specialized tools.

The interface is functional rather than flashy and can feel dense until you learn your way around, and serious telemetry fans will likely want an external GPS for best results. Still, for track day regulars and instructors alike, RaceChrono offers an impressively complete, upgradeable toolset for shaving seconds off lap times and understanding every run in detail.