Training apps that talk you faster
GPS apps for runners and sprinters with a coach in your ear, so you keep your eyes on the track instead of your phone. Now on your Wear OS watch, with heart rate.
Pick your pace
Sprint Lightning
A GPS sprint timer that fires the gun and sounds a tone the instant you cross your finish line.
- Automatic interval timing from 30 to 400 m
- Live speed and cadence, with voice callouts
- Hands-free voice commands
- New: Wear OS watch app with heart rate
Slipstream Runner
A voice coach that tells you when you drift off your target pace or cadence.
- Target coaching with Tight, Normal or Loose sensitivity
- Regular check-ins on speed, cadence or both
- New: Wear OS watch app with heart rate
- Pay once for Pro. No subscription.
Built the same way
Free to start
Download free and start tracking right away. Pro adds the advanced coaching and full history when you want it.
Voice first
Hear your speed, cadence and coaching cues out loud, so your phone can stay in your pocket or armband.
Your data stays with you
The apps have no accounts, no ads and no tracking. Your runs are saved on your phone, synced from your watch, and never sent to us.
GPS you can trust
Filtering smooths out GPS spikes, and a diagnostics view shows satellite count, update rate and accuracy.
Every session saved
Graphs and stats for each run, with history you can look back on and share.
Phone or watch
Both apps are on Google Play and the App Store. On Android, each also runs on Wear OS watches: track a run on your wrist, phone optional.