Triangle Pose Alignment Check
Is your triangle pose actually aligned? Prop your phone up and find out — GoodReps watches your shoulder angle (hip → shoulder → shoulder) live and times the hold only while your form is right, as you work your obliques and hamstrings, with core and shoulders assisting. Free, in your browser, processed entirely on your device.
▶ Check My Alignment FreeHOW TO HOLD A PROPER TRIANGLE POSE
Setup Face the camera, feet wide, both legs straight.
- Hinge sideways over your front leg, lower hand to your shin.
- Reach the top arm straight up, opening your chest to the camera.
- Keep both legs straight; hold, then switch sides.
This is the same instruction sheet you’ll find on the ⓘ panel inside the app — with an animated demo next to it.
THREE STEPS TO A SCORED HOLD
Prop your phone and get in frame
Set your phone at roughly torso height and stand facing the camera. The built-in camera test confirms your lighting, distance, and angle with live green checks before you start.
The AI locks a 17-point skeleton on you
GoodReps measures your shoulder angle (hip → shoulder → shoulder) against the pose target (~40°), entirely on your device. No wearables, no mirrors needed. No equipment — a block (or a stack of books) under the low hand helps at first.
Settle in — the timer only counts real alignment
The hold timer runs while you’re actually in the pose. Drift out of alignment and it pauses (it doesn’t reset) until you find the shape again.
WHAT THE CAMERA WATCHES
- Your side-bend geometry against the pose target (~40°) — measured live through the hip and shoulder line.
- The hold itself — the timer runs only while you're in the pose; drift and it pauses (never resets) until you're back.
- The two lines that make the triangle — the form cue draws them: "Both legs straight, chest open."
COMMON TRIANGLE POSE MISTAKES
Bending the front knee
The triangle's edges are straight lines. Micro-bend is fine; a lunge is a different pose. Keep both legs long and strong.
Collapsing the chest toward the floor
Reaching too far down folds you forward. Rest the hand higher (shin or a block) and rotate your chest open toward the ceiling instead.
Weight dumped into the bottom hand
The hand is a kickstand, not a pillar. Your legs and obliques hold the pose — the hand just visits.
Neck cranked toward the ceiling
If looking up strains your neck, look straight ahead. The pose is in your spine and legs, not your gaze.
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 to touch the floor in triangle pose?
No — hand on the shin or a block is the honest version for most bodies. Depth without a collapsed chest beats floor-touching every time.
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.
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.