Frame-by-frame, not gut feel
A coach at the fence watches your jump in real time and remembers an impression. The AI reviews every frame and shows you the exact moment your form breaks. No guessing which attempt felt different.
Javelin AI is fast video feedback for every rep. Film a javelin on your phone. We pull the frames that matter (takeoff, plant, block, the moments that decide the rep). Then we tell you what we see, in the same words your coach uses.
A coach at the fence watches your jump in real time and remembers an impression. The AI reviews every frame and shows you the exact moment your form breaks. No guessing which attempt felt different.
Most video tools see "a person moving." Our model was built around javelin. It knows the phases, the form points, and the words real javelin coaches use.
The AI doesn't get tired. Your 30th rep gets the same review as your 1st. That's how you track real change over a season.
Upload any javelin clip. Our AI knows the phases of javelin specifically, block start, plant, release, clearance, whatever the event demands, and reports what it sees in coach vocabulary, not generic motion data.
Follow up in chat and ask questions. The AI remembers your analysis and speaks the language of javelin coaching.
The AI runs the same loop a coach runs at practice. Watch the rep, find the moments that matter, write the notes. The difference is speed: it takes about a minute, and you can do it on every rep.
Side-on, landscape, about 30 feet from the action. Phone on a tripod or in a teammate's hands works fine. Get the whole rep in one frame.
Athlete is in the frame from the first move to the last. No zooming in or out during the rep.
The AI knows the phases of javelin. It scans the clip and picks out the moments that matter most: takeoff, plant, release, clearance, whatever the event hinges on.
Most apps grab a frame every 30 ms. We sample dense around the moments where coaches actually pause.
Each phase gets a score against a level standard. The AI tells you which phase is leaking the most, why, and which frame the issue shows up in. Notes use the same words your coach would use.
A phase-by-phase report. The phase that's costing you the most performance is at the top.
Each note links to the drill that fixes it. Run the drill block, film another rep, upload again. The AI compares the two and tells you whether the gap closed.
Most athletes upload 3-5 reps a week. Light enough to keep up with, dense enough to track real change.
Athletes who want a second pair of eyes between coaching sessions. Coaches who want extra reads on every rep. Parents who want to know what to look at on game film.
Most HS programs share one coach across many events. The AI fills in: a phase-by-phase read on every rep, even the practice reps your coach didn't see.
Your coach sees you a few times a week. The AI sees every rep. Use the AI to track form between sessions, then bring the notes back to your coach.
A coach can only watch one athlete at a time. The AI catches what you miss when you're focused on someone else, and gives you a written summary you can review later.
Honest line about what Javelin AI is good for, and what it leaves to a human coach. The goal is a clear set of expectations before you upload.
A directory of every javelin page on the site, from broad analysis tools to specific phase deep-dives. Each entry points to a focused write-up.
Download the app. Film a rep. See what the AI sees. Free first analysis, no card, no account required.