Sprint
Time to speed
0–60 mph, rolling ranges such as 50–75 mph and targets of your own.
0–60 free · others Full Version
GPS timing & ride analysis for iPhone
Your drive.
Clearly measured.
Measure sprints, distances and laps. Then understand where the time went – with GPS quality you can see, not claims you have to trust.
- The iPhone is enough
- Quality stays visible
- Data stays local
What are you measuring today?
One drive. Three modes.
Sprint, distance or laps – you pick the target. Track4Facts records route, speed and distance in every mode alongside it.
Distance
Time over distance
The quarter mile, 400 m, 1000 m and custom distances – measured in parallel.
Full Version
Laps
Laps and sectors
Set start/finish, define sectors and watch the live delta to your best lap.
Full Version
After the drive
Not more data.
More answers.
Pick a question. Track4Facts shows you exactly the view that answers it.
Where am I losing time?
Two laps, metre by metre.
Speed and time difference share the same distance axis. That is how you spot where slowing begins, how fast you carried the corner and which section costs the most.
Full Version Understand lap comparison
How am I using the grip?
Braking, turning, accelerating.
The friction circle shows whether longitudinal and lateral forces occur separately or combined – derived from GPS and, optionally, measured directly.
Full Version Understand g-forces
How is my body responding?
Heart rate aligned to drive and laps.
Optional Race Training records your heart rate and aligns it in time with the drive and its laps.
Free See Race Training
Apple Watch along for the ride
Start and stop from your wrist.
The iPhone stays the measuring and storage source. The Watch controls the normal ride recording and shows the key values live.
- Speed, distance, duration and top speed
- New sprint times as a large result card
- Optional heart rate with Race Training
Readings with context
A number is only as good as its basis.
Track4Facts stores signal quality, data gaps and failure reasons alongside the result. No account, no automatic upload.
Good GPS qualityAccuracy, spacing and plausibility were all in the good range.
LimitedMathematically valid, but with increased uncertainty.
Invalid attemptNo invented value: the specific reason stays with the drive.
What you get
Start for free.
Extend once.
No subscription, no usage limits, no ads. Everything the Full Version unlocks is listed here in full.
Free
Record drives. Measure 0–60.
The complete ride recording and one sprint range stay free for good.
- GPS speedometer, full ride recording – including with the screen locked – and ride statistics
- 0–100 km/h or 0–60 mph sprint measurement
- Ride history, map view and Race Summary
- One vehicle, Apple Watch with optional heart rate and Live Activity
- Import existing Track4Facts backups
Full Version
Measure more. Understand more.
A single one-time purchase unlocks everything else:
- Custom sprint ranges from a standstill or while rolling
- Distance timing with splits and finish speed
- Complete lap mode with courses, sectors, live delta and lap times
- Lap comparison, corner and braking analysis, theoretical lap and consistency
- Friction circle, interactive 3D telemetry and corner dynamics
- Replay plus speed, elevation and acceleration charts
- GPX/CSV export and complete backup creation
- More vehicles and external GPS receivers up to 25 Hz
One-time purchase, no subscription. Anyone who bought Track4Facts earlier already has the full version. The App Store shows the current price – it depends on your region.
Ready for the next drive?
Measure. Understand. Drive better.
Open Track4Facts in the App Store and see the current feature set.