Short answer
TrackSpeed is our pick for sprinters who want automatic elapsed times, split times, and calculated average speed from a measured distance on iPhone. It is purpose-built for the timing job: set the line, run the rep, then review the recorded result instead of relying on a coach's stopwatch reaction.
It is not the winner for every job. SprintTimer is a strong choice when a traditional scrollable photo-finish image is the priority. Outperform Sprint Tools is better suited to reaction, stride, and readiness tests. Track & Field AI is aimed at technique feedback. General GPS apps are useful for longer running, but they do not define a short sprint zone as clearly as two fixed timing points.
The best sprint apps by job
| App | Best for | How it measures or analyzes | What you can inspect |
|---|---|---|---|
| TrackSpeed | Automatic sprint times and split times | Camera-based line crossings on one or more iPhones | Reviewable finish evidence and saved training results |
| Photo Finish: Automatic Timing | Automatic phone timing across several sports | Camera-based automatic timing with multi-phone options | Recorded timing events and training-session tools |
| SprintTimer | Photo-finish images and timing several athletes | Phone-based photo finish with manual result reading | A scrollable finish image with times |
| Outperform Sprint Tools | Starts, stride metrics, readiness, and mechanics | Reaction tests and on-device video-analysis tools | Saved tests, analyses, and athlete benchmarks |
| Track & Field AI | Technique feedback across track-and-field events | Uploaded or recorded video with phase-by-phase analysis | Saved video analyses and event-specific feedback |
App features and storefront details were checked against the US App Store on August 9, 2026. Availability and pricing can change by date and region.
Why TrackSpeed is a strong high-precision training option
TrackSpeed is built around a simple measurement principle: make the start and finish events automatic, visible, and repeatable. That matters more than adding decimal places to a manual time.
Automatic crossings
The app watches a configured timing line, so a hand-timed start or stop reaction does not define the result.
Reviewable evidence
The crossing can be inspected after the rep. A coach can catch a blocked view or bad setup instead of accepting an unexplained number.
Start, split, and finish
One iPhone can handle a solo workflow; additional phones can cover multiple timing points for acceleration and flying-speed sessions.
Speed from a known distance
When the course is measured correctly, average speed is calculated from the recorded time and distance rather than estimated from a GPS trace.
This combination makes TrackSpeed one of the strongest phone-first choices for high-precision, repeatable sprint training. That is a training claim, not a claim of certified competition timing. Result quality still depends on measured distance, stable placement, visibility, device conditions, and a consistent start protocol.
Read the high-level measurement and validation boundaries on the TrackSpeed technology page. The exact implementation is intentionally proprietary.
Pick the app from the question you need answered
“How fast was my flying 10?”
Use automatic start and finish crossings over a measured 10-meter zone. TrackSpeed is designed for this workflow.
“Who crossed first?”
Use a photo-finish workflow that preserves a finish image, especially when several athletes arrive together.
“Why am I losing speed?”
Use stride or technique analysis. Timing can show that performance changed; video analysis can help investigate why.
“How much running did I do?”
Use GPS or a wearable for total distance, longer repetitions, and training load—not as the only boundary for a very short split.
A fair accuracy test for any sprint app
- Measure the course with a tape and mark the exact timing planes.
- Use the same start definition for every rep.
- Keep camera side, height, angle, line position, and device fixed.
- Run repeated trials under the same surface and environmental conditions.
- Inspect the recorded crossing whenever the time looks unusual.
- Compare methods for agreement—not just correlation—and do not mix datasets after switching systems.
For the equipment trade-offs behind that protocol, see our single-beam, dual-beam, and camera timing analysis. For maximum velocity, use the flying 10-meter test protocol.
Sprint speed app FAQ
What is the best app for tracking sprint speed?
For automatic sprint times and split times on iPhone, TrackSpeed is our pick because timing starts and stops from configured camera crossings, the result can be reviewed, and several phones can cover start, split, and finish points. For technique analysis rather than elapsed time, use a dedicated video-analysis app.
Can an iPhone measure sprint speed?
Yes. If the measured distance is correct and the app records an automatic elapsed time, average speed is distance divided by time. Keep the same start method, line positions, camera setup, surface, and recovery when comparing sessions.
Is GPS accurate enough for a flying 10-meter sprint?
GPS can be useful for longer running and field-sport workloads, but a short flying split is better measured from clearly defined start and finish events. A camera or timing-gate workflow makes those boundaries easier to standardize and review.
Can a sprint timing app replace official race timing?
No phone training app should be treated as certified Fully Automatic Timing for official results. Use the system required by the governing body for competition; use a consistent app protocol to compare training repetitions.
Time the sprint, then inspect the result
TrackSpeed is free to download on iPhone, with optional in-app purchases. The US App Store showed a 5.0 rating from one rating when checked on August 9, 2026.
Related Articles
Single-Beam vs Dual-Beam Timing Gates: Accuracy Compared
A research-backed analysis of single-beam, dual-beam, transponder, camera, and FAT timing—and why their sprint results should not be mixed.
Flying 10-Meter Sprint Test: Setup, Timing, and Protocol
A repeatable flying 10m test protocol for measuring maximum velocity, including runway setup, recovery, phone placement, and result tracking.