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Crew Chief

AI voice race engineer and spotter with real-time fuel, tire, damage and opponent callouts.

Race Engineer & Spotter Free Active
Active

Development status

Latest release V4.19.4.2, 2026-08-24. Source

Status checked automatically against the project repository at this build.

Think this is wrong or out of date? Correct this listing on GitHub.

Overview

Crew Chief (CrewChiefV4) listens to your session and speaks up like a real race engineer and spotter: fuel and pit-window calls, tire and damage warnings, gap and position callouts, and flag/incident alerts, all read out loud so you never have to glance at an overlay mid-corner. It supports a long list of sims through their native telemetry APIs.

The project is open source under the MIT license. Primary development has moved from the original GitHub mirror to GitLab, where releases are cut every few weeks.

With SimLauncher: Crew Chief is an absolute must for me, and not just on ovals. It's one of SimLauncher's built-in companion apps, so I just toggle it on and it starts and connects right after the sim.

At a glance

Supported sims
  • iRacing
  • ACC
  • Assetto Corsa
  • AC Evo
  • rFactor 2
  • AMS2
  • RaceRoom
  • F1
  • BeamNG
  • Le Mans Ultimate
Pricing Free
License Open source
Platform Windows
Website thecrewchief.org
GitLab gitlab.com/mr_belowski/CrewChiefV4

About Crew Chief

Crew Chief is a spoken-word race engineer: it watches telemetry from the sim and calls out fuel and pit strategy, tire wear and damage, gaps to the cars around you, and flags or incidents, all out loud, so you're not reading a HUD while trying to hold a line. It also acts as a spotter, warning you about cars alongside or closing fast, the role a real spotter or engineer plays over team radio.

Beyond the basic calls, it recognizes other drivers by name during races, reads pace notes for rally-style stages, and takes voice commands, so you can ask it questions or dictate chat messages without leaving the wheel. It supports multiple languages and voice packs, has an optional in-game overlay with subtitles for the calls, and works in VR since none of it depends on looking at a screen.

It's built for racers who want race-day radio chatter without a human spotter or engineer on hand, whether that's league racing, endurance stints, or solo practice where the extra situational awareness helps. It's free and MIT licensed, developed on GitLab (the GitHub copy is a mirror, not the canonical repo), and like SimHub it's a background companion process: a SimLauncher profile can start it with the sim so the voice calls are already running before you're on track.