Wall Sit Alignment Check
Wondering if your wall sit is aligned? Prop up your phone — GOODREPS watches your knee angle (hip → knee → ankle) live and times the hold only while your form is right, as you work your quads, with glutes and core assisting. Free in your browser today; coming to Google Play and the App Store.
Coming to Google Play & the App Store▶ Try The Alignment Check
LIVEHOW TO HOLD A PROPER WALL SIT
Setup Sit against a wall, side-on to the camera, thighs parallel to the floor.
- Slide down until your knees are at 90°, back flat on the wall.
- Hold — keep your weight in your heels.
- Breathe steadily until the timer ends.
Same sheet as the ⓘ panel in the app — animated demo included.
THREE STEPS TO A SCORED HOLD
Prop your phone and get in frame
Phone at roughly torso height, set up side-on to 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) against the pose target (~160°) on-device — no wearables. A clear wall and enough space to slide down into a seated angle.
Settle in — the timer only counts real alignment
The hold timer runs while you’re in the pose. Drift out and it pauses (doesn’t reset) until you find the shape again.
WHAT THE CAMERA WATCHES
- Your knee angle against the sit target (~160°) — thighs toward parallel, shins vertical.
- The hold timer — it runs only while you stay in the window; drift and it pauses until you return.
- Back flat on the wall — gaps mean you are standing instead of sitting.
COMMON WALL SIT MISTAKES
Sitting too high
If thighs are nowhere near parallel, you are resting. Slide lower until the camera agrees.
Pushing through the toes
Weight in the heels keeps knees happier and the sit honest.
Arching off the wall
Ribs and low back stay glued to the wall. If you peel off, reset.
Holding your breath
Breathe steady. A wall sit is an isometric — oxygen still matters.
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 gear for wall sit?
Usually just floor space (and whatever the hold requires — bar, wall, or bench). Your phone camera does the coaching.
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.