Try Swim Sage

The real app, in your browser, with made-up swims. Tap around: it's yours to explore.

Every screen, every figure, worked out by the app

Twelve weeks of made-up swims, three a week, getting slowly faster, with the mistakes a Watch really makes: a pool recorded as 24 m, a first length that includes getting in, a false start. Swim Sage's own analysis worked out every figure you see here, exactly as the app does on an iPhone.

Start the demo

Open a swim, race it, scrub its lengths
Fix the Watch's mistakes in Check
See pace and efficiency over months
Judge swims against a target

What the demo can't do: read your own swims from Apple Health, talk to your Watch, send challenges by Messages, or answer any question you type (Ask answers its example questions). Nothing you do here is kept or sent anywhere; close the page and it's gone.