Film it, read it, race it againReplaySwim
Upload one length of swim video and pick the read you want — the stroke, the race, or a broadcast announcer calling your swim. $7 each, mix and match.
À la carte
Pick what you want to know
Three separate reads, each priced on its own. The numbers are for the coach; the call is for everybody else.
Stroke analysis
A pose model follows the body through the water frame by frame: stroke rate and distance per cycle, left/right symmetry and body roll, kick tempo, streamline depth, and breakout distance off every wall.
Race analysis
The whole race, split by split. A pace curve per length, turn time in and out of every wall, first-50-versus-last-50 fade, and stroke count drift as the swimmer tires.
Broadcast announcer
An announcer calls the swim like a championship final, voiced over the swimmer's own footage and timed to their real splits. It is the part that gets sent to grandparents.
À la carte, $7 each
Three separate reads, priced on their own. One is $7, two is $14, all three is $21. No subscription, no credits, no auto-renew.
No trimming
Filmed the whole heat, warm-up and all? Upload it as it came off the phone. ReplaySwim finds the length your swimmer swam and reads that.
Only charged for a read
Checkout places a hold, not a charge. If the analysis can't finish, the hold is released. Any number the camera angle made untrustworthy comes back marked unavailable, with the reason.
How it works
Pool deck to inbox
Four steps, and one of them is just closing the tab.
- 1
Film it from the deck
A phone at the water line, tracking alongside the swimmer. No rig, no sensors, no special camera.
- 2
Pick your reads
Drag the clip in, say which lane you were in, and choose what you want to know. ReplaySwim works out the stroke itself.
- 3
Every frame is read
Pose tracking over the whole clip, then the metrics, then the call. No sampling. About twenty minutes.
- 4
Check your inbox
A link lands in your email. Open it anywhere and send it to a coach, a grandparent, or your story.
Filming it
One parent, one phone, anywhere on the deck
Hold your phone sideways, keep your swimmer in the frame, and follow them to the wall. There is no angle you have to get right first.
From where you're standing
Phone held down near the water line, walking along the deck with your swimmer. Above water, this is the angle the tracker reads most cleanly.
Through an underwater window
Nothing splashing between the lens and the swimmer means every keypoint stays visible, and almost nothing comes back unmeasured.
From up in the stands
Filming down hides the far arm, so a few left-versus-right numbers come back marked unmeasured, with the reason. Everything else still gets coached.
Got a clip on your phone?
Upload it, pick your reads, and close the tab. A link lands in your inbox in about twenty minutes.
A Zincan venture
Built at Zincan, in Zincan Venture Studio.
One founder per company, a partner in the room every week, and a studio where you talk to Coach and the work gets done.