Free AI Plank Form Check
Hold a plank for 20 seconds. Get a form score, your #1 fix, and a free 7-day plan.
Planks · ~60s · Camera permission required
What we check
Six biomechanical signals, scored from your camera in real time.
- Hip alignment with shoulders
- Glute and core engagement
- Head and neck position
- Shoulder stack over wrists
- Foot positioning
- Hold quality over time
How it works
- Step 1
Set up your camera
Phone propped against a wall, or laptop on a table. Hip-height, 6–8 feet back, full body in frame.
- Step 2
Do five reps
Five strict planks. Take it at your own tempo. KinesteX tracks joint coordinates on-device.
- Step 3
Get your score and fix
A 0–100 form score plus the single most important correction to work on.
On-device. We don’t see your video.
KinesteX runs the form-check model in your browser. The frames never leave your device — we only see anonymous joint coordinates and the resulting metrics. Nothing is recorded. Nothing is uploaded. Close the tab and it’s gone.
What your result looks like
A score, the fix, and the metrics behind it.
Form score
Tighten your form
Stay tall, control the tempo, and breathe through the rep.
Frequently asked
Privacy, accuracy, equipment.
20 seconds is plenty for a form check. Quality first.
Yes. Mira scores form, not bravado.
No. On-device only.
That usually means hips are sagging. The form check will catch it.
3–4 times a week, short holds with strict form.
Planking builds core strength. Visible abs come from body composition.
V2 — coming soon.
Take the 9-question quiz to get your free 7-day plan.
Try another form check
Ready to see your score?
Five planks. 60 seconds. A 0–100 score and the one thing to fix next.