Best Knee Goniometer Apps

202+ iOS apps curated and reviewed

3.5 avg rating
18 free apps
Updated July 2026

Whether you're new to knee goniometer or looking for an upgrade, our curated collection of 202+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Knee Goniometer Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ACL Rehab TrackerACL Rehab TrackerFree4.3★ (8)NoNoJul 2026
2Goniometer: Range of MotionGoniometer: Range of MotionFree5.0★ (8)NoYesAug 2026
3KneeProgressKneeProgressFreeNoNoJul 2026
4RateFast GoniometerRateFast GoniometerFree2.0★ (4)NoNoAug 2026
5Protractor for Angle MeasuringProtractor for Angle MeasuringFree4.5★ (1K)YesYesAug 2026
6GoniometerGoniometerFree1.0★ (2)NoNoJul 2026
7Iki.ltIki.ltFree1.5★ (4)NoNoAug 2026
8Physical Therapy: ACL & KneePhysical Therapy: ACL & KneeFree4.4★ (154)NoYesAug 2026

Top Picks for Knee Goniometer

ACL Rehab Tracker#1

ACL Rehab Tracker by Twin Tip Solutions LLC

AI Knee Angle Goniometer
Editor's Choice
💪 Health & Fitness
4.3(8 ratings)
Free
ACL Rehab Tracker screenshot 1
ACL Rehab Tracker screenshot 2
ACL Rehab Tracker screenshot 3
ACL Rehab Tracker screenshot 4
ACL Rehab Tracker screenshot 5
ACL Rehab Tracker screenshot 6

This app uses AI to measure knee flexion and extension angles from photos, helping you track your ACL rehabilitation progress. Monitor your recovery journey with weekly updates, visual history, and progress charts. It's designed to keep you informed and motivated between physical therapy sessions.

Goniometer: Range of Motion#2

Goniometer: Range of Motion by KEVIN LAN

Digital Joint ROM Measure
Strong Contender
🏥 Medical
5.0(8 ratings)
FreeIn-App Purchases
Goniometer: Range of Motion screenshot 1
Goniometer: Range of Motion screenshot 2
Goniometer: Range of Motion screenshot 3
Goniometer: Range of Motion screenshot 4
Goniometer: Range of Motion screenshot 5
Goniometer: Range of Motion screenshot 6

Measure joint range of motion accurately using your smartphone's motion sensors. Provides animated guides for precise placement and a library of normal ROM values. Ideal for medical professionals and patients tracking recovery.

More Knee Goniometer apps to explore

4
RateFast Goniometer
RateFast Goniometer
RateFast Goniometer
by Alchemy Logic Systems, INC.
Free

This medical tool allows healthcare professionals to measure a patient's functional motion remotely using a camera. It offers flexible positioning and the ability to toggle between positive and negative measurements, unlike traditional goniometers.

Measure functional motionRemote measurement via cameraAdjustable reference leg positioning
🏥 Medical
(4)
free
5
Protractor for Angle Measuring
Protractor for Angle Measuring
Protractor for Angle Measuring
Measure Angles in Few Taps
Free

Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.

Real-time angle measurementTouch and camera modesMeasure angles in photos
🔧 Utilities
(1K)
free with in-app purchases
6
Goniometer
Goniometer
Goniometer
by Guilin GemRed Sensor Technology Co., Ltd.
Free

Easily record joint motion range using Bluetooth connection with a digital goniometer. Track personal rehabilitation training progress for joint movement. Remember to consult a doctor before making medical decisions.

Bluetooth connectivity with digital goniometerRecord joint range of motionTrack personal rehabilitation status
🔧 Utilities
(2)
free
7
Iki.lt
Iki.lt
Iki.lt
Mano IKI Premija
Free

Enhance your shopping with a digital loyalty card, personalized offers, and purchase history tracking. Discover weekly promotions, special discounts, and participate in games. Find nearby stores and access shop information easily.

Digital loyalty cardPersonalized offersPurchase history
🛍️ Shopping
(4)
free
8
Physical Therapy: ACL & Knee
Physical Therapy: ACL & Knee
Physical Therapy: ACL & Knee
Pro-Guided Recovery Videos
Free

This app offers guided video exercises and personalized programs for knee and ACL recovery, developed by experienced physical therapists. It includes advanced range of motion tracking and direct access to professional support to help users stay motivated and achieve their rehabilitation goals.

Guided video exercisesPersonalized recovery programsRange of motion tracking
🏥 Medical
(154)
free with in-app purchases
9
Goniometer
Goniometer
Goniometer
by June Gaming
$4.99

This app functions as a digital goniometer, designed to measure angles and the range of motion for patient joints. It aids in assessing joint injuries and predicting recovery timelines.

Measures anglesMeasures joint range of motionAssesses joint injury extent
🏥 Medical
(38)
free
10
SmartMeasure
SmartMeasure
SmartMeasure
by Ossur Americas
Free

This digital measuring system for custom knee braces uses iPhone technology to guide users through selection, measurement, and ordering. It aims to provide a more intuitive, efficient, and accurate process for fitting custom braces, allowing more time for patient care.

Digital measuring systemCustom knee brace fittingStep-by-step guidance
🏥 Medical
(2)
free
11
HelloVan
HelloVan
HelloVan
by HelloVan Solutions SL
Free

Easily transport and assemble your furniture and decor purchases. Connects you with verified carriers for quick, professional delivery and setup. Get instant quotes and schedule your service.

On-demand transportFurniture assemblyVerified carrier profiles
🛍️ Shopping
(6)
free with in-app purchases
12
TracPatch Knee
TracPatch Knee
TracPatch Knee
by Consensus Orthopedics
Free

This app provides a smart, connected solution for remote patient monitoring in orthopedics. It captures key daily activities and range of motion to offer healthcare providers real-time insights into patient recovery, enabling proactive care adjustments and improved outcomes.

Remote patient monitoringObjective data capturePredictive outcomes
🏥 Medical
(9)
free
13
myHip&Knee
myHip&Knee
myHip&Knee
An App for Sunnybrook Holland
Free

This app guides patients through recovery after hip or knee surgery with interactive steps and real-time task reminders. It includes health checks to monitor progress and provides personalized advice based on user input.

Interactive step-by-step recovery guideReal-time task remindersHealth check progress monitoring
🏥 Medical
(1)
free
14
Angulus Pro - Precision Angle
Angulus Pro - Precision Angle
Angulus Pro - Precision Angle
Measure angles, professionally
Free

This app provides professional-grade angle measurements for clinical and personal use. It offers high precision, multiple measurement modes, and AI-powered camera assistance for accurate assessments and progress tracking.

Precision to 0.01°Four Measurement ModesAI-Powered Camera Overlay
🔧 Utilities
(25)
free with in-app purchases
15
VOW Stays
VOW Stays
VOW Stays
VOW
Free
✈️ Travel
(0)
16
NYSORA MSK US Knee
NYSORA MSK US Knee
NYSORA MSK US Knee
by NYSORA Inc
Free

Explore practical musculoskeletal ultrasound anatomy and regenerative therapy for the knee. This educational app features clear images, illustrations, animations, and guided procedures from an expert in sports injuries.

Ultrasound images and illustrationsFunctional anatomy and dynamic testsAnimations and guided procedures
📚 Education
(6)
free with in-app purchases
17
Angle Meter 360
Angle Meter 360
Angle Meter 360
Convenient angle meter, finder
Free

Measure angles precisely on photos or in real-time using your camera. This user-friendly tool allows for unlimited angle measurements simultaneously, with features like scaling and color adjustment for ease of use.

Angle measurement on picturesReal-time camera angle measurementUnlimited simultaneous angle measurements
🔧 Utilities
(353)
free with in-app purchases
18
Digital Angle Finder: 3D Meter
Digital Angle Finder: 3D Meter
Digital Angle Finder: 3D Meter
Protractor & 3D Angle Measure
Free

Measure angles precisely using your device's sensors. It functions as both a protractor and a 3D angle meter, allowing you to determine angles between surfaces or lines on a plane with high accuracy. Save your measurements by taking photos with the angle recorded.

Precise angle measurement3D angle measurementProtractor mode
🔧 Utilities
(221)
free
19
Goniometer App
Goniometer App
Goniometer App
Joint Range of Motion
$3.99

This application transforms your device into a tool for measuring joint range of motion. It uses your device's camera and sensors for accurate measurements, offering an easy-to-use interface and a searchable reference for normal values. Intended for educational purposes, it assists in understanding goniometry.

Measure joint angles with precisionEasy-to-use interfaceSwitch between front and rear cameras
🏥 Medical
(1)
paid
20
GAP-FLEX®
GAP-FLEX®
GAP-FLEX®
Knee Recovery Made Simple
Free

This app guides users through knee recovery therapy using a gravity-based system. It provides setup instructions, animated demonstrations, therapy timers, progress tracking, and recommended exercises to aid in regaining range of motion after knee replacement.

Setup instructionsAnimated demonstrationsTherapy timer
🏥 Medical
(4)
free

FAQ about Knee Goniometer

What are the best knee goniometer apps for iPhone?
ACL Rehab Tracker tops our knee goniometer apps ranking as of July 2026, with a 4.3-star average from 8 App Store ratings, and it's free to download.
Yes — 18 of the top knee goniometer apps we rank are free to download, including ACL Rehab Tracker and Goniometer: Range of Motion.
ACL Rehab Tracker has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 202+ knee goniometer apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
ACL Rehab Tracker uses AI-powered image analysis. You take a side-view photo of your knee, and the app's advanced AI analyzes the image to calculate your knee flexion and extension angles.
You can track your knee extension and flexion angles, view your recovery timeline organized by weeks post-op, and see all past measurements with photos and dates. Progress charts help visualize your improvement over time.