See it before you sign up

PuffinVBT turns an ordinary phone video of a lift into per-rep bar speed, range of motion and long-term trends. Here is what that looks like.

Real data

Real footage with the tracked bar path drawn over the video, plus the per-rep speed and range of motion measured from it.

Real data

The same lift at an easy and a hard effort, side by side, with both bar paths and speed curves overlaid.

Demo data

Nine months of logged sets: estimated 1RM over time, load-velocity profiles, bar-speed PRs, consistency and training volume.

Athletes film their own sets. You get their numbers, their trends and a place to respond, with no hardware to buy.

Works on videos you already have. No sensor, no cables.