Free workout tools

Rep counters, a plank timer and a form checker that watch you through your phone's camera, so you can keep your eyes off the screen. They're all the same free AI coach: it recognises which of 28 exercises you're doing, so you can go from push-ups to squats to a plank in one session.

• AI rep counterA free AI rep counter that watches you through your phone camera and counts every rep out loud: squats, push-ups, sit-ups, curls and almost any other exercise. No app needed.
• AI form checkerCheck your exercise form with your phone camera. This free AI form checker watches every rep of 28 exercises and tells you out loud what to fix: depth, knees, back and hips.
• Push-up counterCount push-ups with your phone camera. This free online push-up counter counts every rep out loud, skips half reps and tells you when your hips sag. No app needed.
• Squat counterA free squat counter that uses your phone camera: it counts every squat out loud, skips the ones that are too shallow and checks your depth, knees, back and heels.
• Sit-up counterCount sit-ups automatically with your phone camera. This free online sit-up counter counts every full sit-up out loud and tells you when you don’t come all the way up.
• Jumping jack counterCount jumping jacks with your phone camera. This free online counter counts every jack out loud and checks that your arms go overhead and your feet jump wide.
• Pull-up counterCount pull-ups and chin-ups with your phone camera. This free online counter counts a rep when your chin clears the bar, calls out half reps and spots swinging.
• Plank timerA free plank timer that watches your form. It starts when you get into your plank, pauses if you drop out, says the time every 10 seconds and tells you when your hips sag.

How they work

Your camera and an on-device body-tracking model find 33 points on your body about 30 times a second. The coach measures your joint angles, counts a rep when you move through the full range, and compares each rep with good form for the exercise. Nothing is uploaded: the video never leaves your device.

Want the technique first? Every exercise has a form guide.