Protractor Smart vs Protractor Angle Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor Smart
This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.
- Camera-based angle measurement
- Touch measure mode
- Plumb bob measure for slopes
- Polygon measurement (premium)
- Screenshot functionality
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Protractor - smart instrument to measure angles. Turn on the camera mode and measure the angle of buildings, mountains, or any other object around you. This app includes two free measuring modes: - Touch measure - touch the screen to set the angle (use camera view!). - Plumb bob measure - pendulum - use to determine the slope (remember to calibrate the plumb). In each mode, you can switch to camera view and take measurements of all objects around you. Additional Premium mode: Polygon measurement lets you draw any shape on your screen to check all its angles. Turn on the camera to see the real object through your phone and copy its shape. You can also pick a photo from your gallery or take a new picture to draw a shape on the image. In Premium mode, you can change colors, add helper lines, and switch between different angle units. All modes allows you to make a screenshot of anything on the screen. Enjoy !!!
Protractor Angle Meter
This app allows you to measure angles from photos using your device's camera or existing images. Add multiple measurements with customizable colors and labels, and view results in various units. Save your work automatically and export high-quality images of your measurements.
- Measure angles from photos
- Live camera or photo library input
- Multiple angle measurements per photo
- Customizable color and labels
- Degrees, radians, or slope percentage output
- Precision Loupe for accuracy
- Automatic saving
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Protractor Angle Meter turns any photo into a precise workspace for measuring one angle or many. Frame an object in the live camera and freeze the image, or choose a photo from your library. Add as many angle measurements as you need to one photo. Change each measurement’s color and add an optional label so even complex checks remain easy to read. Use a shared pivot with two rays, or switch to four-point mode for two independent lines—even when their intersection lies outside the image. Drag any point while the Precision Loupe shows an enlarged crosshair above your finger. Pinch to zoom, pan the image, snap in 15° steps, and feel haptic feedback as you adjust. Measure interior, exterior, and reflex angles. View results in degrees, radians, or slope percentage. Every change saves automatically, so you can return to a measurement whenever you need it. With Premium Pass, export and share a clear JPEG containing the photo, colored measurement lines, arcs, values, and labels. Your saved source photo remains unchanged. No ads. Save up to 10 photo-based measurement records for free, with unlimited angle measurements inside every record. A one-time Premium Pass unlocks result-image sharing and unlimited records. No subscription.
Screenshots
Verdict
The clearest difference is review sentiment: Protractor Angle Meter at 100% against Protractor Smart's 40%. Protractor Angle Meter also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 21 months). Protractor Smart's advantage is ratings volume (242 vs 1) and device support (3 vs 1). On price, ads and monetization model 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
Both are free to download. Protractor Smart sells 1 one-off in-app purchase. Protractor Angle Meter asks for nothing beyond the download.
Protractor Angle Meter holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Protractor Smart has 242 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 40% of Protractor Smart's written reviews are positive against 100% of Protractor Angle Meter's.
Protractor Smart ships an update every 21 months, Protractor Angle Meter fortnightly. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.
| Parameter | Protractor Smart | Protractor Angle Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (242 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 40.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 242 — better | 1 |
| Update frequency | Every 21 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 11 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | ExaMobile S.A. | Romiick LLC |
Customer experience
Protractor Smart
Protractor Angle Meter
Bugs and requests
Protractor Smart
Reported bugs
8 issues- App loads indefinitely
- App does not launch after iOS updates
- Stuck on loading screen
- Photo upload not possible in premium version
- Upside-down protractor on iOS
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- Phone locks during use
- Camera mode is terrible and inaccurate
- Poor calibration
Requested features
6 requests- Improve camera function (light, zoom)
- Add automatic hold function
- Increase digital readout size
- Add more skins/cosmetics
- Option to remove ads
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- Fix upside-down protractor on iOS
Protractor Angle Meter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Protractor Smart
- AdBlock - Remove ads$1.99
Protractor Angle Meter
No in-app purchases
Questions
Is Protractor Smart free?
Is Protractor Angle Meter free?
Which has better reviews, Protractor Smart or Protractor Angle Meter?
Do Protractor Smart or Protractor Angle Meter have ads?
Which is updated more often, Protractor Smart or Protractor Angle Meter?
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