Step 1
Connect phones
Pair your phones together. They sync automatically over Wi-Fi.
SG
Built by an OlympianTrackSpeed
TrackSpeed — Automatic sprint timing from your phone
Camera-based motion detection triggers timing automatically when you cross the line. Save sessions, view history, and track improvement over time.
Auto-timed result
Flying 10m
photo-finish verified
0.99s
10.10 m/s
Race-day setup
How it works
Get started in under a minute. Connect phones, choose the start, position the gate, and run.
Step 2
Start your session
Choose from five start methods—flying start, touch release, countdown, voice commands, or start in frame.
Step 3
Position your phone
Place your phone at the finish line. No calibration needed.
Step 4
Get your time
Run your sprint and get instant results with millisecond accuracy.
Start modes
Five ways to start your sprint
Choose the start method that matches your training goals
Touch Release
Place finger on screen, lift to start. Captures reaction time just like blocks at a real track meet.
Best for: 40 yard dash, combine testing
Voice Command
"On your marks... Set... GO!" AI voice commands with realistic timing based on official rules.
Best for: Solo training, group starts
Countdown
3... 2... 1... BEEP! A visual and audio countdown gives you a predictable start signal. Great for consistent training.
Best for: Solo training, timed intervals
Flying Start
Run through at full speed. First gate crossing starts the timer automatically. Perfect for max velocity testing.
Best for: Speed testing, flying 10m/20m/30m
Start in Frame
Begin stationary in the camera view, then take off. Timer starts when you leave the frame. No second device needed.
Best for: Solo training, single phone setup
Wireless timing gates
Connect multiple phones for precise timing
Use one phone at the start line and another at the finish. Add more phones for split times at any distance.
Wireless Connection
Phones connect automatically via peer-to-peer WiFi. No internet required.
Coordinated timing events
Each phone covers its assigned start, split, or finish point so the complete rep can be reviewed as one session.
Unlimited Gates
Add split timing with 3+ phones. Track acceleration phases and top speed.
Professional timing, zero equipment
Everything you need is already in your pocket
TrackSpeed
Reviewable
Finish evidence
Auto
Line crossing
2+
Device Sync
0
Extra Hardware
Smart Detection
Camera-based motion detection triggers timing automatically when you cross the line.
Multi-Device Sync
Connect phones wirelessly. Millisecond-accurate clock synchronization between gates.
Instant Results
See your time the moment you cross. No manual stopwatch delays.
Track Progress
Save sessions, view history, and track improvement over time.
Compare the recorded event
Different timing tools answer different questions
A fair comparison starts with what triggers the time, what evidence remains afterward, and whether the result is for training or official competition.
| Method | What records the event | Evidence | Equipment | Intended scope |
|---|---|---|---|---|
| TrackSpeed | Automatic crossing at a configured camera line | Reviewable finish evidence | iPhone; more phones for more timing points | Repeatable training and testing |
| Manual stopwatch | A person's button press | Usually a number only | Stopwatch or phone | Simple group practice |
| Photocell timing gates | An object breaking one or more beams | Varies by system | Gates, tripods, controller, and/or transponders | Dedicated training-gate workflow |
| Certified photo-finish FAT | Official start signal and finish-plane image | Official photo-finish image | Specialized certified system | Official stadium competition |
TrackSpeed does not replace certified FAT for official results. For training, keep the distance, start method, line position, placement, and conditions consistent, then compare like with like.
Measurement you can inspect
What makes a sprint time trustworthy?
Useful timing is more than a decimal. The event must be clearly defined, automatically recorded, reviewable, and collected with a repeatable protocol.
Automatic crossing events
A configured camera line defines the timing point, so a coach's start-or-stop reaction does not become part of the recorded rep.
Evidence you can review
The finish evidence makes an unusual result inspectable. Poor framing, a blocked view, or an incorrect line is easier to catch than with a number-only timer.
Start, split, and finish
Several phones can cover several timing points in one session, while a single-phone workflow remains available for solo training.
Honest training scope
TrackSpeed is built for repeatable training and testing. It is not certified Fully Automatic Timing for official meet results.
The setup is part of the measurement
Keep distance, start definition, line position, phone placement, visibility, surface, and recovery consistent. Compare results only with sessions that used the same protocol.
From the track to the code
Built and tested by Sondre Guttormsen
Two-time Olympian. Sole founder and developer.
“I use TrackSpeed to dial in my run-up before competitions. The accuracy is impressive and I always know exactly what speed I'm hitting at takeoff.”
2x
Olympian
$0
Extra hardware
Start timing today
Ready to time faster?
Download TrackSpeed and start training with precision timing today.
<1 min setupNo extra hardwareReviewable finish evidence
Subscription required. Pricing varies by region.