LaneSync turns your phone or tablet into a pool-deck interval timer — live send-off countdowns, lap splits, and rep tracking for every lane, all at once.
LaneSync
Interval Trainer
3 lanes · 10×100 @ 1:30
M. Ortiz
10×100 · 100m reps
REP 2 / 10
K. Reyes
10×100 · 100m reps
REP 2 / 10
Reps × distance @ send-off — from a quick preset or the custom builder. Load it to every lane at once.
One tap starts the master clock and every lane together. Or push lanes off individually as they arrive.
Hit LAP at every touch. Splits, best, average, and rep progress update live — no clipboard, no math.
A countdown ring on every lane turns orange and pulses in the final five seconds — swimmers leave on time without you calling it.
Tap LAP at each wall and last, best, and average splits compute instantly. The whole set's history, captured as it happens.
Build any set — 10×100 @1:30, 20×50, a custom ladder — and load it to all lanes in one move. Presets for the regulars.
Glanceable in bright sun or a dim natatorium. High-contrast condensed numerals read clean from six feet back — and it works with no signal.
Free to start, no account required. Set up your first interval in under a minute.