TracQi
TracQi TrackStar

Lap timing,
professional grade.

Powered by TrueNorth sensor fusion, TrackStar measures laps on the level of dedicated pro hardware. Race your friends in real time, get coached corner by corner, and let AI find your perfect line.

No transponder- Race with friends- Lap coach
Watch a session
TrackStar live lap timing
TrackStar home dashboard
Powered by TracQi TrueNorth

A phone timer with pro-box DNA.

Most phone lap timers lean on raw 1 Hz GPS - fine for a rough lap time, useless for real analysis. TrueNorth fuses GPS and IMU into a high-rate, high-accuracy stream that puts TrackStar an order of magnitude beyond casual phone timers.

Typical phone timer
TrackStar
Pro hardware
Positioning source
1 Hz GPS plus interpolation
TrueNorth GPS plus IMU fusion
GPS plus IMU box
Sample rate
1 Hz
10 Hz, 50 Hz+ external
10-100 Hz
Accuracy, urban
about 8 m
4.7 m to 0.48 m RTK
sub-meter
Race with friends
No
Real-time, live leaderboard
No
On-board lap coach
No
Built in
$800 device
AI line optimizer
No
Built in
No
Cost
$ app
$ app
$500-2,000 hardware
TrackStar live timing with friends
Killer feature - Race With Friends

Everyone on track, live.

Roll up to a track day with your crew and TrackStar links you together. See each other's position on the map, telemetry, and lap times in real time, whether you are driving or watching from the pit wall.

Live leaderboard Session live
1
YouAudi S4
1:42.318Leader
2
Mike T.WRX STI
1:42.74+0.42
3
Sarah K.Mustang GT
1:43.50+1.18
4
Jason R.GTI
1:44.37+2.05
Killer feature - Lap Coach

An $800 coach, on the phone you own.

Dedicated lap-coaching boxes cost around $800. TrackStar gives you corner-by-corner guidance - where you are gaining, where you are losing, and exactly how to fix it - built right in. You would subscribe to TracQi for about 14 years before matching the price of the box.

Coach feedback - this lap
Turn 4Brake 15 m later - you are carrying entry speed well+0.31s
Turn 6Earlier throttle pickup - losing drive onto the back straight-0.22s
Turn 9Tighter apex - you are running wide on exit-0.14s
Sector 3Cleanest sector of the lap - keep that rhythm+0.46s
$800
dedicated coaching box
vs
14 yrs
of TracQi to equal it
TrackStar session history and coaching
The Lap Optimizer

An AI driver that learns your perfect lap.

We do not hand-script a racing line. We let thousands of virtual drivers learn the fastest way around the track in your exact car, through a physics simulation of your build, then keep the quickest one.

Lap time by generation - your Audi S4 at this track
100s104s108s1:36.7
Gen 1Gen 7Gen 14 - converged
01
Your car, not a generic one
Power and torque curves, gearing, weight, drivetrain, tires, and aero feed a real-time physics engine.
02
A population of AI drivers
Each has its own driving DNA - brake points, turn-in, apex, throttle pickup - and all attempt the lap.
03
The fastest survive
Scored on lap time, consistency, and staying on track. The quickest are kept and recombined.
04
It improves every generation
Braking sharpens, apexes tighten, throttle smooths, and it keeps exploring so it never settles.
05
The winner's path is your line
Every brake point, apex, and throttle pickup becomes the fastest line found for your build on that track.

The same corner is driven differently depending on what you bring. Because the optimizer learns through your car's physics, the line reflects how your build behaves at the limit.

Telemetry and analysis

See every tenth, find every one.

Back at the pits, go deep. Replay laps, study braking zones, and read acceleration, velocity, and power as heat maps painted onto the track - then pull in full engine data from OBD2 to see the whole picture.

Lap replay
Re-drive any lap with a full breadcrumb trace of the exact line you took.
Braking zones
See precisely where you brake, how hard, and how it compares lap to lap.
Accel heat maps
Lateral and longitudinal g mapped onto the track to find where grip slips away.
Power and torque maps
Velocity, torque, and power heat-mapped corner by corner across the lap.
Lap-by-lap compare
Overlay two laps to see exactly where you gain and lose every tenth.
OBD2 engine overlay
Connects to the TracQi OBD2 library for full engine telemetry overlaid and replayed on your laps.
TrackStar track library
Tracks and timing

Any track. Your way.

A vast library of ready-to-run tracks, plus full tools to build and customize your own - however you measure a lap.

Thousands of tracks
Search and download a vast community library - every circuit with a map preview.
Build your own
Create custom tracks and drop your own points of interest anywhere.
Splits and sectors
Define custom split points and sectors for the analysis that matters to you.
Closed or open loop
Circuit lapping or point-to-point - hill climbs, autocross, canyon runs.
Learn - watch and do

Not how to tap buttons - how to find time.

Every tutorial is a real session on a real track: time a lap, read the data, make a change, and go faster.

9:02
Run your first track day with friends
Link up, see live positions, and race the leaderboard.
11:48
Read the Lap Coach and find 2 seconds
Turn corner-by-corner feedback into a faster lap.
8:30
Let the AI optimizer find your line
Configure your car and watch the lap times fall.
7:55
Overlay engine data on your laps
Pair OBD2 and replay RPM, boost, and AFR per corner.
YouTube tutorials drop in here, paired with track-day write-ups on the TracQi blog.
Your fastest lap is in there.

Race your friends, get coached, and let AI find your line - all from the phone in your pocket.