Tuck Jump Form Check
Wondering if your tuck jump 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 and glutes 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 TUCK JUMP
Setup Stand facing the camera with space overhead.
- Dip slightly, then jump as high as you can.
- Pull both knees up toward your chest at the peak.
- Land soft and immediately reset.
Same sheet as the ⓘ panel in the app — animated demo included.
THREE STEPS TO A SCORED TUCK JUMP
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. Clear floor space — no box required.
Move — and watch the form bar
The bar fills from ~170° toward ~65° at the bottom. Cut range short and it tells you; full ROM is what counts.
WHAT THE CAMERA WATCHES
- Knees driving toward the chest at the top of the jump.
- A soft, athletic landing ready for the next takeoff.
- Upright posture — you are tucking, not folding into a ball and tipping.
COMMON TUCK JUMP MISTAKES
Skipping the tuck
If knees never rise, it is just a small hop. Drive thighs up.
Landing with locked knees
Bend to absorb. Locked landings rattle the joints.
Rushing into the next jump off balance
Stick the landing for a beat when the app asks — quality over flopping.
Rounding forward mid-air
Chest stays proud while knees lift. Do not dive your torso into your thighs.
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 tuck jump 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.