The app
Film one length. SwimAI tracks your stroke, names the fault costing you speed, and builds your training week around fixing it.
A friend films you from the deck, walking alongside, phone held sideways. One swimmer, freestyle, in the nearest lane.
▶ Watch how to film (56 s)Your level, stroke rate, stroke count, speed and the fault to fix first, in about a minute.
Kai, your coach, builds your week around that fix.