Turn your iPhone into a clinical-style goniometer. Measure joint range of motion in seconds — neck to fingertips — with guided placement and saved progress.
Free to measure · Goniometer Pro is a one-time $4.99 — no subscription
Place the phone against the limb, read the live angle, and lock it when steady. No extra hardware.
Live, gravity-referenced angle with a large readable display. Flat and upright starts read 0° automatically — no calibration.
Every movement has a step-by-step guide: patient position, exactly where the iPhone lies, and the motion from start to end range.
Cervical spine, shoulder, elbow, wrist, hip, knee, ankle — and every finger and thumb joint. Neck to fingertips.
Measure MCP, PIP and DIP joints with a guided two-placement technique. Total Active Motion per digit is computed automatically.
Measure any angle: wheelchairs, splints, ramps and seating. Check footplates and trays sit even with the built-in Level.
De-identified labels, left/right sides, and progress history across visits. Export a clean PDF report or CSV. Your first profile is free.
Clean, clinical, and fast — designed to stay out of your way during an assessment.
One app to document range of motion across the whole patient — reviewed against standard supine measurement technique.
Flexion, extension, lateral flexion, rotation
Flexion, abduction, external rotation
Flexion, extension
Flexion, extension, radial / ulnar deviation
Every MCP, PIP, DIP and thumb MCP/IP — flexion & extension
Flexion, external rotation
Flexion, extension
Dorsiflexion, plantarflexion
Free, searchable normal-ROM values for every movement
Measuring is always free. Pro adds the workflow that turns readings into a record you can keep and share — a one-time purchase, never a subscription.
No accounts. No analytics. No tracking. Everything stays on your device and works fully offline.
Free to measure, every joint and movement. Download Goniometer for iPhone.
