Push-up and squat counter with your phone camera

Because the tool measures the joint angle, and the bend of the knee and elbow is visible from the side. From the front, the hip, knee and ankle points line up almost in a straight line during a squat, and the angle stops depending on depth. The exception is jumping jacks: spread arms and legs matter there, so the camera goes in front.

A movement in which the joint did not reach the set threshold. By default the threshold is a parallel squat (about 100° at the knee), a push-up to 95° at the elbow, and a pull-up to 90° with the chin above the wrists. Such a rep is not added to the count, goes into a separate column and is called out loud.

Then only the elbow angle is checked: the "chin above wrists" rule applies only when the nose and wrists are visible. For strict judging, place the camera slightly below the bar and further back so both the face and hands are in the frame — or turn the rule off in the exercise settings.

As an aid — yes, as a judge — no. The tool measures the angle with a single camera, without scene depth: a steep angle, a hidden leg or clothes matching the background make tracking worse. The ±1 buttons let you correct the count, and the log keeps both the count and the threshold it was taken against — but the final call stays with the examiner.

One. The model is tuned for one figure in the frame; if two people get in, it counts whoever it treats as the main one. For a class, enter a name in the "Athlete" field before each set — the log will collect everyone's results in turn and export them as one table.

The voice comes from the browser and operating system, and not every setup has a voice in the page language — some Android devices lack Ukrainian or Arabic, for example. Then the count stays as beeps: high — counted, low — short rep. At a very fast pace, round numbers are spoken instead of every rep so the voice does not fall behind the movement.