A RipFir app
Every lap, timed.
LapLine turns your Apple Watch into a lap timer for practice days. Walk the track once, set your lines, and arm it on the gate — every lap splits itself, and your phone does the math.
iPhone + Apple Watch · Free · No account, no tracking
Why LapLine
Race day you've got a transponder. Practice day you've got a buddy with a phone, or nothing at all — which means the day you actually work on your riding is the day you fly blind. LapLine fills that gap with hardware you already own.
How it works
Setup takes one walk around the track. After that it's two taps a moto.
Walk the loop once with your watch. LapLine records the shape of the layout.
On your phone, tap two points for a holeshot line and two for a finish line.
Tap Arm Moto. The clock starts when you cross the holeshot line — not when you tap.
Every finish-line crossing splits a lap. Tap End Moto when you're off the track.
The trick
That's what makes this work. MX tracks get reshaped constantly, but the finish line and the first turn stay put at any given facility — so your timing lines get reused week after week. Walk the new layout if you want the map to look right; your lap times don't need it.
What you get
Line-crossing detection modeled on how transponder timing actually works — the holeshot starts your clock, every finish crossing ends a lap.
Full finish-to-finish laps only, so a warm-up lap or a sighting lap never pollutes your best time.
How tightly you're stacking laps. The number that separates a fast rider from a rider with one fast lap.
How much slower your back half ran than your front half. The most honest fitness metric in the sport — and the one you can train away.
Stack every moto from the night side by side and see the lap trend across the whole session.
The walked layout drawn on a map with your holeshot and finish lines marked, so you can see exactly what's being timed.
Recording runs as a workout session, so GPS stays alive in your pocket — and the ride counts toward your rings. Syncs to your phone when you're done.
Your recordings stay on your devices. No servers, no accounts, no tracking SDKs.
The honest comparison
A transponder scores races, and you still need one for that. But it's roughly $300–450 of hardware plus an annual subscription, and it only works when the track's timing loop is switched on — which isn't practice day. LapLine covers the other days, with gear that's already on your wrist.
Pairs with
LapLine tells you your back half is two seconds slower than your front half. RipFir Train is how you close that gap — periodized strength and conditioning built for moto, including a dedicated arm pump progression.
LapLine is free and in open beta. Join the TestFlight and bring it to the track this week.
Join the TestFlightFree · iPhone + Apple Watch · Requires TestFlight from the App Store