Protractor+ vs Angles
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor+
Transform your device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.
- Angle measurement
- Degrees and radians
- Intuitive visual control
- Elegant design
- Pocket protractor functionality
Read full descriptionHide full description
Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians. Features: - Elegant design - Measure in degrees and radians - Intuitive visual control
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.
- 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
Read full descriptionHide 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
Screenshots
Verdict
The clearest difference is price: Protractor+ at Free against Angles's $0.99. Protractor+ also leads on ratings volume (10K vs 5). Angles's advantage is in-app purchases (none vs 1) and review sentiment (27% vs 15%). On rating, update cadence, 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
Protractor+ is free to download; Angles costs $0.99 up front. Protractor+ sells 1 one-off in-app purchase. Angles asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.1 for Protractor+ against 4.2 for Angles. That said, the two scores are not equally well evidenced: Protractor+ has 10K ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 15% of Protractor+'s written reviews are positive against 27% of Angles's.
Protractor+ ships an update every 2 months, Angles every 4 months. The most recent releases landed on September 30, 2026 and September 20, 2026 respectively.
| Parameter | Protractor+ | Angles |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.1 (10K ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 14.9% of reviews | 26.7% of reviews — better |
| Number of ratings | 10K — better | 5 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 9.3 — better |
| Further details — not scored | ||
| Size | 21 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Tue Nguyen Minh | Nathaniel Cochran |
Customer experience
Protractor+
Angles
Bugs and requests
Protractor+
Reported bugs
3 issues- Camera feature not working as expected
- Angle measurements not accurate
- Frequent app crashes
Requested features
3 requests- Ability to measure in degrees without upgrade
- Improved accuracy and responsiveness
- Removal of timeouts and paywalls
Angles
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Protractor+
- Pro Features$1.99
Angles
No in-app purchases
Questions
Is Protractor+ free?
Is Angles free?
Which has better reviews, Protractor+ or Angles?
Do Protractor+ or Angles have ads?
Which is updated more often, Protractor+ or Angles?
Other comparisons
