Track4Facts PRO
Measure times. Compare drives. Create videos.
0–60 mph or 0–100 km/h. Free for good.No account. No subscription.
From launch to finished clip.
GPS recording. Vehicle profiles. History. Driving analysis.01 / Drag · Acceleration timing
Measure your launch, see how speed builds and compare two saved sprints. Understand how your acceleration changes from one run to the next.
Compare recorded sprints
Both drives start at zero in the comparison. See the total times and how speed develops towards the same target.
Standard sprint free
Standard sprint free
Full Version
Sensor fusion combines iPhone GPS with motion sensors to reconstruct the sprint timing between individual GPS samples.
The custom algorithm reconstructs launch onset and sprint progression from GPS and motion data. Its calculations and limitations are documented.
For eligible 0–100 km/h and 0–60 mph sprints using internal iPhone GPS. The GPS time stays visible for comparison.
Understand sensor fusion02 / Track · Lap timing
A lap time tells you how fast you were. Sectors and a comparison with a reference lap show where the difference comes from, during the session and afterwards.
Explore lap timing
The total time is just the beginning. Sector comparisons show where along the circuit you gain or lose time.
Full Version
Full Version
Full Version
Set your start and finish, time laps automatically and compare sectors. During the session, a live delta shows the gap to your best lap.
Ghost Lap replays your lap against your best or an ideal lap made from your fastest sectors. The map and time delta show where the difference happens.
03 / Video Studio New
The video captures the moment. Your driving data tells the rest. Bring them together in Video Studio, with the displays that matter to you.
Discover Video StudioRecord driving video and data together.
Choose the moment and design your overlays.
Save or share as MP4, in landscape or portrait.
The numbers identify the displays in this look. Select one, then explore the additional displays below.
Show GPS speed as digits, a round speedometer or a bar. This example uses a round speedometer. Choose your own size, position, accent colour and background.
Sprint and distance best times have separate displays. They show saved results from the drive; other attempts are not recalculated afterwards. This example shows a best sprint.
Choose a G-circle, a short motion trail or two axes. The display uses suitable recorded iPhone motion data, with GPS as the fallback. The data source stays visible.
The route connects your position to the driving video, putting corners and acceleration into the context of your drive.
Record the road and driver simultaneously using the rear and front cameras. The optional driver camera requires a supported iPhone and compatible settings.
Optionally show recorded Apple Watch heart-rate values. The display is off by default and requires separate confirmation for every video export.
These displays are not shown in the example above. Add them in Video Studio to suit your drive.
Lap time, sector times and lap summary.
Show the elevation profile of your drive.
Keep track of the distance you have travelled.
A bar or history curve, not pedal position.
Time difference at equal travelled distance, with an eligible reference lap.
Name, details, custom text or a photo from your Garage.
Combine, position and style each display. Many offer several designs and a compact layout. Availability depends on the measurement mode and recorded data; missing values are never invented.
Explore displays and designsKeep exploring
From your route to corner dynamics. Selected views show what you can learn from your driving data.
The basis matters
GPS and motion sensors provide the data. Documented methods turn it into sprint times and analysis, with visible sources and quality assessments.
Methods, formulas and limitationsYour recordings stay stored locally.
Get started
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