Calisthus

Crunch counter with your camera

Lie on your back, knees bent, camera to the side. A full crunch cycle counts. No app, no account to start.

Start crunchesLog in
Calisthus crunch counter with the device camera
Screenshot: hero

Get into position

Open Start workout, choose crunches, and allow your camera.

For the best results, lie on your back with your knees bent and position yourself side-on to the camera. Your full side profile should be visible so Calisthus can follow the movement from start to finish.

Hold the starting position for a moment while the counter checks your alignment. If someone else enters the frame, counting pauses until you’re the only person in view.

Crunch framing: side profile, knees bent, lying on your back
Screenshot: framing

What counts as a crunch?

Calisthus is looking for a complete movement, not just a small lift of the head or shoulders.

After the initial alignment, a rep starts from the lying position, moves through the crunch, and finishes when you return to the starting position. Follow the range shown on screen to make sure each rep counts.

When you’re ready to finish your set, press Stop to save the reps you’ve completed.

Full-range crunch cycle on Calisthus: lie back, lift, lie back
Screenshot: full-range

Video stays in the browser

Counting runs on this device. Guest sets stay in this tab until you sign in; then only reps and times sync — not video.

Try another exercise

Calisthus also supports:

  • Push-ups — Count complete push-up reps and take part in 1v1 Matchmaking.
  • Squats — Track your squats with your camera during a solo workout.

FAQ

Does the crunch counter upload my camera?

No. Your camera is used locally while you exercise. Video and pose data stay in your browser during the workout.

Can I use it without an account?

Yes. You can start a crunch workout without signing in. Your set stays in the browser you’re using.

If you sign in with Google, your workout details can be saved to your account. Matchmaking also requires an account.

How does Calisthus count crunches?

Once you’ve held the starting position, the counter looks for a complete movement from lying back to the lifted position and back again.

The on-screen range helps show the movement required for a rep to count. Small or incomplete movements won’t be added to your total.

Where should I place the camera?

Use a side view with your knees bent and your body visible in the frame. A clear side profile gives the counter a better view of the movement.

Can I compete in a crunch 1v1?

Not at the moment. Crunches are for solo workouts.

The 1v1 Matchmaking feature is currently available for 60-second push-up competitions, with each player using their own device.