GRIDCARDCompanion
A Windows app that sends Le Mans Ultimate race results to the GridCard mobile app
The companion watches LMU's Results folder. When a race writes its result, the companion reads the XML on the PC and sends the race data to the paired phone: lap times, sectors, position and tire wear. It also reads the current Le Mans Ultimate Driver and Safety rating and shows it on the driver card.
Both paths install the same app. The Microsoft Store version is certified by Microsoft and updates through the Store. The .exe is the same build, installed per user without admin rights, and the in-app updater keeps it current.
No account required
Pairing uses a 6-digit code from the phone app. No email address, password or login is involved.
Local parsing
The companion parses Results.xml on the PC. Only the structured race data ever leaves the machine.
Unpair anytime
A single tap unpairs it from the phone. Reset & uninstall removes the companion and deletes every LMU race it uploaded.
How to set it up
After setup, the companion sits in the system tray and uploads each new race automatically.
Install
Two install paths, both the same app.
- Microsoft Store
- Installs from the Store with automatic updates.
- Side-loaded .exe
- The installer (~12 MB) runs per user without admin rights, and the in-app updater keeps it current.
Pair with the phone
In the GridCard mobile app: Settings → Integrations → LMU → Pair Windows companion. The phone shows a 6-digit code, valid for 10 minutes, which is entered into the companion to pair the two.
Race
When LMU writes a new Results.xml, the companion reads it and uploads the structured fields. The race appears in the mobile app within seconds. Any results already present in LMU's Log/Results folder at pairing are uploaded as well, so older races are not lost.
Per-lap data from each LMU race
LFM returns race-level summaries only: finish position, rating and totals. Le Mans Ultimate writes a full results file with considerably more detail. The companion reads that file, so every LMU race appears in the mobile app in full: every lap time and sector split, position lap by lap, pit stops and end-of-race tire wear. The companion also reads the current Driver and Safety rating from the sim and shows it on the driver card, and every finished race includes a post-race brief.
Per-race detailPro
Per-lap detail in the mobile app is part of Pro. The companion, the pairing and the upload pipeline are free.
- ✓Current Driver and Safety rating (DR / SR) read from Le Mans Ultimate and shown on the driver card
- ✓Every lap time with S1 / S2 / S3 sector splits
- ✓Per-lap position
- ✓End-of-race tire wear
- ✓Pace & consistency graphs over time, per car class
- ✓Per-track records: best lap, best finish, average pace
- ✓Net positions gained and finish-position trends
- ✓Post-race brief showing the Driver and Safety rating change. The push on race finish is free for everyone; the brief is added for Pro subscribers with a paired companion.
LMU driver card
A dedicated Le Mans Ultimate card showing live Driver and Safety rating as tier medallions, alongside LMU-only totals and career stats.
Post-race brief
Finish, fastest lap and the Driver and Safety rating change, shown when the race ends.
Rank milestones
Driver and Safety rank-ups, from Bronze to Platinum, marked as they're reached.
Companion screens
The first run shows a pairing screen. After that, the companion sits in the system tray and opens to a small two-tab panel, Status and Settings.
Changelog
-
v1.3.0 2026-07-08 - In-class position now shows the finishing rank within each car's own class for Le Mans Ultimate races.
- Past races already on disk receive a one-time in-class-position backfill, so earlier results show class rank too.
- Driver and Safety Rating changes now appear for races finished while the companion was closed.
-
v1.2.0 2026-06-16 - Driver and Safety Ratings from Le Mans Ultimate now sync after each race.
- Team endurance results: multi-driver stint data now shows every driver's contribution in the app.
- Recent activity now shows the newest race at the top during the initial sync, matching the live feed instead of listing oldest-first.
- Team races where the driver swapped out on the final lap now sync correctly.
- The companion now starts in English on first run.
- Companion icon updates and fixes.
-
v1.0.7 2026-06-01 - Start menu icon redesigned to read clearly at small sizes and adapt to Windows light or dark theme.
-
v1.0.6 2026-05-23 - Control panel reorganized into Status and Settings tabs. Sync activity stays the main view, configuration is one tap away, and the window sizes to fit each tab.
- Autostart moved from an install-time prompt to a "Launch with Windows" toggle in Settings, controllable at any time.
- Push notifications now fire for LMU races finished within the last 24 hours, including races picked up by the companion's backfill scan after launch.
- LMU Results folder confirmation is skipped when the folder is found at a standard Steam or install path.
- Microsoft Store tiles render at full resolution on the Start menu.