GonioCam – Goniometer & ROM
Measure joint angles fast
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
GonioCam turns your iPhone into a digital goniometer: take a photo, tap three joint landmarks – and read the joint angle, automatically expressed in neutral-zero notation (e.g. "Knee Ext/Flex 5-0-130").
MEASURE – FREE AND UNLIMITED
• Take a photo or import one from your library
• Tap three points, fine-tune to the pixel with the loupe
• Live angle right on the image, large and readable
• Presets for knee, hip, elbow, shoulder (flex/abd), ankle, wrist and generic angles – each with landmark guidance
• Hyperextension and deficit notation (0-10-90) handled correctly
• Automatic point suggestion for knee, hip and elbow – your confirmation is always required
• Share the photo with the angle drawn in
DOCUMENT – GonioCam Pro
• Create patients (pseudonyms or initials recommended)
• Assign measurements: left/right side, AROM/PROM, date
• Progress curves across the whole treatment
• Left/right side comparison in one chart
• PDF report with curves, measurement table and photos – choose exactly what goes in
• Unlimited assigned measurements
PRIVATE AND OFFLINE
No account, no sign-in, no tracking. Photos and measurements stay on your device and are never written to your photo library. Pose detection also runs entirely on device.
METHODOLOGY DISCLOSED
The app includes a methodology and accuracy screen: measurement method, evidence on photo goniometry, and our own accuracy check against reference images with known angles. Plus a capture guide with the rules that carry the accuracy.
IMPORTANT NOTICE
GonioCam is a measurement and documentation tool (digital goniometer) and not an approved or certified medical device. It does not diagnose and gives no treatment recommendations. Clinical judgement remains with the treating professional.
PURCHASE OPTIONS
Measuring stays free. Unlock the documentation workflow (patients, progress, side comparison, PDF report) in one of three ways: a permanent one-time purchase, a yearly subscription with the first month free, or a monthly subscription. Prices are shown in the App Store.
Subscriptions renew automatically for the selected period unless cancelled at least 24 hours before the end of the current period. Payment is charged to the Apple Account and can be cancelled any time in its settings. When a subscription ends, patients, progress charts and the PDF export you already recorded stay readable - only creating new entries is locked.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://brockaimusic.github.io/goniocam/datenschutz.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: Latin American Spanish. Plus smaller improvements under the hood.
The developer, Johann Brockstedt, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Johann Brockstedt
- Size
- 1.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, Dutch, French, German, Italian, Portuguese, Spanish
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pro (month) $2.99
- Pro (year) $8.99
- GonioCam Pro $17.99
- Copyright
- © 2026 Johann Brockstedt