High Knees Form Check
Wondering if your high knees is solid? Prop up your phone — GOODREPS watches your knee angle (hip → knee → ankle) live and scores every rep while you train your quads and calves, with core assisting. Free in your browser today; coming to Google Play and the App Store.
Coming to Google Play & the App Store▶ Try The Form Check
LIVEHOW TO DO A PROPER HIGH KNEES
Setup Stand facing the camera, arms bent at your sides.
- Run in place, driving each knee up to waist height.
- Stay light on the balls of your feet.
- Pump your arms in rhythm.
Same sheet as the ⓘ panel in the app — animated demo included.
THREE STEPS TO A SCORED HIGH KNEES
Prop your phone and get in frame
Phone at roughly torso height, stand facing the camera. A quick camera test checks lighting, distance, and angle before you start.
The camera locks a 17-point skeleton on you
GOODREPS measures your knee angle (hip → knee → ankle) on-device — no wearables. Just your body and a few feet of clear floor.
Move — and watch the form bar
The bar fills from ~155° toward ~70° at the bottom. Cut range short and it tells you; full ROM is what counts.
WHAT THE CAMERA WATCHES
- Knee height on every drive — toward hip level when the app asks for it.
- A quick rhythm without collapsing posture.
- Arms pumping opposite the legs — quiet arms usually mean quiet knees.
COMMON HIGH KNEES MISTAKES
Staying on the toes with tiny steps
Drive the knees up. Marching in place is not high knees.
Leaning back
Stay stacked over the hips. Leaning makes the lift look taller than it is.
Holding your breath
Breathe with the cadence. This is conditioning, not a max hold.
Slapping the floor
Quiet, quick contacts. Noise usually means you are crashing, not springing.
PRIVATE BY DESIGN
Pose detection runs in your browser via TensorFlow.js. Camera frames are analyzed in real time and immediately discarded — nothing is recorded, nothing leaves your phone, and we never see them. Sign-in is optional; skip it and everything stays local.
QUESTIONS, ANSWERED
Do I need any equipment to check my high knees form?
Just your phone for most variations. Add free weights when the pattern is clean — the app still scores the movement either way.
Does it work in a home gym or low light?
Run the built-in camera test first — it checks your lighting, distance, and angle with live green checks before you start. If a rep still slips through, manual counting is always one tap away.
Is my camera feed uploaded anywhere?
No. Pose detection runs entirely on your phone, in your browser. Frames are analyzed in real time and immediately discarded — nothing is recorded, nothing is uploaded.
RELATED GUIDES
Free forever — camera counting for all 60 exercises, no account needed. Pro (voice coaching, programs, depth-camera form checks) is $7/mo, $49/yr, or $99 once. No ads, ever.