Comparison

Angles vs Angulus Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Angles

This tool allows users to measure angles within videos, either captured live or imported from their library. It supports frame-by-frame analysis and exporting data for further calculations. Designed for rehabilitation professionals.

Highlights
  • Measure angles in videos
  • Capture or import video
  • Frame-by-frame video analysis
  • Point selection and manipulation
  • Export data to spreadsheet (.xlsx)
  • Adjustable angle label display
Features
Read full description

This goniometer tool can be used to measure angles at various times in a video. Designed for rehabilitation professionals. Features: • Capture new videos or import existing videos from your library • Step frame-by-frame through a video, or drag the slider to seek to a specific time • Select points and drag them into place • Lines and angle measurements automatically appear, connecting the points • Repeat with more frames, points, and angles • Export to spreadsheet (.xlsx format) for further calculations and analysis (note that there are multiple worksheets - one with raw point coordinates, and one with angle measurements) Make sure to capture your video directly perpendicular to your subject, with the camera level in all planes, and without panning the camera. The display of angle labels can be turned on/off in the app's preferences, found in the Settings app. App developer: Nathaniel J. Cochran, in collaboration with Regina Harbourne Supported by Duquesne University, Physical Therapy Dept. in the Rangos School of Health Sciences Developed in part to support a grant from the Institute of Education Sciences, US Dept. of Education

About

Angulus Pro

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.

Highlights
  • Precision to 0.01°
  • Four Measurement Modes
  • AI-Powered Camera Overlay
  • Real-Time Analysis
  • Clinical Documentation & Export
  • Progress Tracking
Features
Read full description

Angulus Pro: Clinically Validated Angle Measurement Trusted by researchers worldwide with 40+ peer-reviewed publications. Angulus Pro delivers professional-grade angle measurements validated in leading medical journals: • Journal of Medical Internet Research • Journal of Clinical Orthopaedics and Trauma • Journal of Neuromuscular Diseases → Learn more: https://www.yonaga.app/angulus/research Research Validated • 40 published studies using Angulus (2021-2026) • 3,000+ patients assessed by researchers • Validated against gold-standard goniometry • Applied in orthopedics, rehabilitation, neurology, and sports medicine Key Features • Precision to 0.01°: Professional accuracy for clinical assessments • Four Measurement Modes: V, W, X, and N modes for ROM, fractures, and specialized angles • AI-Powered Camera: Overlay technology for precise alignment • Real-Time Analysis: Instant measurements from camera or photo library • Clinical Documentation: Add annotations and export reports • Progress Tracking: Monitor improvement over time Professional Applications • Joint range of motion (ROM) • Hallux valgus and deformity angles • Fracture assessment • Postural analysis • Telehealth assessments For Patients and Non-Clinical Users • Track rehabilitation progress • Share measurements with providers • Sports performance analysis Privacy Policy: https://www.yonaga.app/angulus/privacy Terms of Use (EULA): Yonaga - https://yonaga.app/angulus/terms Apple - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Angles4 screens
Angulus Pro4 screens

Verdict

The call

The clearest difference is price: Angulus Pro at Free against Angles's $0.99. Angulus Pro also leads on update cadence (fortnightly vs every 4 months) and rating (4.6 vs 4.2). Angles's advantage is in-app purchases (none vs 3) and iOS requirement (9.3 vs 17.6). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Angulus Pro is free to download; Angles costs $0.99 up front. Angulus Pro sells 3 in-app purchases, starting at $2.99 per month. Angles asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Angulus Pro holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Angulus Pro has 26 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Angles ships an update every 4 months, Angulus Pro fortnightly. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard7 real differences · 3 level
Angles versus Angulus Pro: the parameters behind the verdict, then further details
ParameterAnglesAngulus Pro
Price$0.99Free — better
Rating4.2 (5 ratings)4.6 (26 ratings) — better
Positive reviews26.7% of reviews—
Number of ratings526 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.3 — better17.6
Further details — not scored
Size22 MB134 MB
Age rating4+4+
DeveloperNathaniel CochranYonaga

Customer experience

Angles

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews15 reviews
Positive26.7%
Neutral6.7%
Negative66.7%

Angulus Pro

All ratings26 ratings
Positive88.5%
Neutral3.8%
Negative7.7%

In-app purchases

None

Angles

No in-app purchases

3 purchases

Angulus Pro

Subscriptions2
  • Angulus Pro Monthly7 Days trial$2.991 Month
  • Angulus Pro Annually$29.991 Year
One-time1
  • Angulus Pro Lifetime$49.99

Questions

Is Angles free?
Angles costs $0.99, with no in-app purchases.
Is Angulus Pro free?
Angulus Pro is free to download, with in-app purchases available.
Which has better reviews, Angles or Angulus Pro?
Angulus Pro is rated higher. Angles averages 4.2 out of 5 from 5 ratings, while Angulus Pro averages 4.6 from 26 ratings.
Do Angles or Angulus Pro have ads?
Neither Angles nor Angulus Pro shows ads.
Which is updated more often, Angles or Angulus Pro?
Angles ships an update every 4 months, and Angulus Pro fortnightly. Most recently, Angles was updated on September 20, 2026 and Angulus Pro on September 22, 2026.

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