Two glowing neon runner silhouettes racing along a lit track through a starry mountain landscape

Tactical Sport Companion

You against
your last run.

Every run you finish becomes a ghost. Pick one, and race it - your pace against your own, live, on a shared track. No feeds. No leaderboards. Just ahead or behind.

iPhone required · Apple Watch companion coming soon

RunChasr Active Run screen showing the runner 0.01 miles ahead of their ghost, with live time, pace, and distance readouts

The whole idea

One race. Every run.

Start a run and RunChasr calls up a ghost - one of your own past runs, replayed at the exact pace it happened - and races it against you in real time. Pull ahead and it falls behind. Fade and it catches up.

Two dot-matrix silhouettes, one shared track, always live. No glance required to know direction - only to know by how much.

RunChasr Select Opponent screen showing the recommended ghost plus Personal Best, Longest Distance, and Recovery Standard suggestions
RunChasr End Run Summary screen reading Run Completed, Ghost Defeated, with a stat grid, effort selector, and a notes field

Close the loop

Every finish gets a verdict.

Beat your ghost or lose to it - either way you get a full tactical report: time, distance, and pace side by side with what your ghost did at the same point. Tag the effort, log a note, share the result.

And the run you just finished automatically becomes tomorrow's ghost - the loop never needs manual setup.

System Protocol

Three phases to zero telemetry friction.

01

Pick your opponent

Your last run by default, or a computed suggestion - Personal Best, Longest Distance, Recovery Standard.

02

Race it live

Start your stride. RunChasr relays performance gaps relative to target location in absolute real-time.

03

See the result

Save your workout metrics. The effort concludes with a conclusive verdict and automatically queues as your next ghost target.

Engineering Details

Engineered for focused performance.

Voice, only when it matters

A callout when you take the lead or lose it - never a generic timer nagging you mid-run. An opt-in spoken summary every 5 or 10 minutes for hands-off updates.

Apple Watch companion

Coming soon

The race, live on your wrist - a compact version of the same silhouette track, with its own takeover flash and haptic.

Apple Health, automatically

Sync route paths, distance, duration, and calories automatically with your existing iOS Health records.

Your data stays yours

Runs are stored on your devices, not a server. No accounts, no analytics, no ads. See the privacy policy for the full picture.