From your own training session to a race to a whole lane on staggered send-offs, Brainzie Poolside gives every swim an honest, split-by-split time — straight from your phone.
Big tap targets for wet thumbs, high-contrast in bright light, and the screen stays awake while you time. Every time is captured at the tap — the display never affects accuracy.
Follow a whole training session — yours or your swimmer's — split per length, rest between reps and sets, swim-to-rest ratios, and a tidy summary you can share. Pick up where you left off if you close the tab.
Split a single race length by length, with underwater times and surface speed, a dive-aware projected finish, and pacing against a target. Miss a touch? It's folded back in so your total and average stay exact.
Coaching a lane? Send everyone off on 5–10s intervals and tap Stop for each swimmer as they finish. Every swimmer gets their own accurate time, ranked within the heat and overall — up to eight lanes.
A swim-optimised strength guide: each lift paired with the matching stroke phase, animated from several angles, showing which muscle fires and when — for freestyle and breaststroke.
Nothing to install, no account to create. Add it to your home screen and it opens like an app.
My session for your own training, Race for a single swim, Group set for a whole lane — whatever you're timing.
Times are captured the instant you tap. Share a clean summary as an image or text when you're done.
Poolside runs entirely in your browser — no account needed, and your swim times never leave your device. If you choose to sign in to save your history, it goes to your own Google Drive or OneDrive, never to a server we own. The only thing we collect is anonymous usage counts (which tools get used, how often) so we know what to improve — never your times or personal data.
Open Brainzie Poolside on your phone and start timing in seconds. Free, no sign-up, nothing to install.
Open the app