Precise Sprint Timing.
With Just Two Phones.
Turn two smartphones into a synchronized, laser-accurate timing gate. Measure reaction times, splits, and finish line crossings with millisecond precision.
HOW IT WORKS.
No expensive hardware. Set up two devices and start timing in less than 60 seconds.
Place & Connect
Position Phone 1 at the start line and Phone 2 on a tripod at the finish. Pair them instantly using a simple 4-digit code.
Auto-Sync Clocks
Devices automatically sync their internal clocks over-the-air with sub-millisecond precision.
Run & Time
Sprint through. The finish gate automatically detects body crossings using high-speed computer vision and calculates splits instantly.
NOW ON ANDROID.
Everything you get on web — faster, native, and built for the track.
Dashboard Hub
Track your training load, quick launch tools, and check your performance status instantly.
Smart Sessions
Configure timing distance, connect auxiliary start device, and prepare to sprint.
Precision Splits
Track splits and starting reaction times wirelessly using synced millisecond clocks.
AI Technique Breakdown
Get slow-mo form analysis, vertical oscillation, and biomechanical technique scores.
Performance Insights
Deep dive into historic progression charts and split speed zones to guide your programming.
Athlete Profile
Showcase verified sprints, timing splits, rank on the global roster, and coach endorsements.
THE SPRINT TOOLKIT.
Access professional timing, block start, vertical jump, and technique analysis tools on the go.
Timing Gate.
Turn two smartphones into a synchronized wireless timing gate. Measure split times, reaction start lag, and crossing speed with millisecond accuracy.
Form Analysis.
Upload your sprint video. Get slow-mo biomechanical angles, hip extensions, and technique stride scoring automatically.
Vertical Jump
Measure vertical leap height and power output in real-time.
Reaction Timer
Improve block start drive with millisecond audio-visual cues.
A SPORTS-PERFORMANCE LAB
IN YOUR POCKET.
Hardware-grade measurement with nothing but a phone. Coaches and athletes today measure speed, power, and bar velocity with dedicated hardware. SpeedTrackr replaces it all.
| What they buy today | Typical price | SpeedTrackr tool |
|---|---|---|
| Timing gates (Freelap, Brower, Witty) | $400 – $2,500 | Timing Gates (2 phones, validated ±0.022 s) |
| Jump mats / Just Jump | $200 – $700 | Vertical Jump |
| Reaction lights (BlazePod, FitLight) | $300 – $2,000 | Reaction Timer |
Hardware replacement. No shipping, no batteries, no kit bag.
The price of ONE month of a hardware subscription buys ALL FOUR tools. That's the wedge — we are not just another fitness app.
Built By Someone
Who Runs.
SpeedTrackr was built by Dafin Edison — 26 years old, 14 years of competitive sprinting in Chennai — because elite biomechanical feedback shouldn't require a lab or an international coach.
Elite feedback, locked behind paywalls.
In India, getting real biomechanical feedback on your sprint form requires expensive labs and international coaches. Most athletes — including me — never had access to that.
So I built the tool myself.
After 14 years of sprinting in Chennai and hitting plateaus I couldn't diagnose, I built SpeedTrackR — AI biomechanical analysis from a smartphone. No lab. No coach. Just data.
Surgery stopped everything.
January 2026: hamstring cramp. February 3: appendectomy. By May 2026, my 100m had dropped to ~11.8s. The tool I built was sitting on my phone while I was recovering.
Now I'm using it on myself. Publicly.
June 8, 2026 — 52-week scientific program begins. Every session logged, every time trial published. You'll see the numbers go up and down. That's what real development looks like.
Latest Sprint Performance Blogs
Read practical guides and use the tools to convert insights into results.
Frequently Asked Questions.
Everything you need to know about the science behind SpeedTrackr. Clear answers for athletes who care.