Block start to finish, in five phases
Your 100m breaks into five phases the AI grades separately, block start, drive (0-15m), transition (15-25m), max velocity (25-80m), finish. AI tells you which phase is slowest relative to the standard.
The 100m is decided in tenths of a second. There are five phases: block start, drive phase, transition, max velocity, and finish. Each phase has a target you can measure. Upload a phone clip. The AI pulls the key frames and tells you which phase is costing you the most time.
Your 100m breaks into five phases the AI grades separately, block start, drive (0-15m), transition (15-25m), max velocity (25-80m), finish. AI tells you which phase is slowest relative to the standard.
Most 100m runners leak time in the same places, popping up too early in the drive, stride length collapsing in transition, tightening up in the last 20m. AI flags each one with the cue that fixes it.
Your reps don't tell the same story. Some have a clean drive, some have a clean finish. AI compares attempts side by side and tells you which technique elements are repeatable.
A side-on phone video from 30 feet away is the design target. Upload it, AI grades all five phases, marks the frame where each issue happens, and prescribes the cue. Free first analysis.
Follow up in chat and ask questions. The AI remembers your analysis and speaks the language of sprints coaching.

Common questions athletes and coaches ask about this topic.
A directory of every sprints 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.