Pick the event — stroke, distance and pool length — and a row appears for every length. Choose Custom for an odd distance, open water or a race-pace swim.
Tap Start as the swimmer dives in, then Split at each wall touch. The last touch finishes the race. Missed a touch? Tap Missed split — the time still counts toward the total and is shared evenly across the lengths you missed, so your overall time and average speed stay accurate (those lengths are marked est. and left out of the max-speed and projection maths).
You'll see average speed, max speed and a projected finish. The projection deliberately ignores the first length — the dive makes it faster than the rest — so it isn't over-optimistic.
Tracking the underwater phase? Tap 🤿 UW the moment the swimmer surfaces (before the wall touch). A UW column shows that time, and you can type how far they went underwater in the UW distance field. With that, you get underwater speed, total underwater distance, and the surface-only speed (the same averages with the underwater phase taken out) — all alongside the whole-length figures.
Enter an optional Target time (e.g. 1:05.0 or 65.5) for even-paced target splits in every row, a running ± against each touch, and a ± on the projected finish.