Protractor Smart vs Protractor
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
Measure angles precisely using your phone's screen, gyroscope, or camera. Offers smart presets, real-time feedback with high accuracy, and calibration features to adapt to various situations.
- 3-in-1 measurement modes
- Smart angle presets with alerts
- Hyper-responsive feedback (≤0.5° accuracy)
- Auto dynamic compensation calibration
- Anti-shake technology for motion scenes
- Screen lock for measurements
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Ditch bulky tools! Measure angles precisely anywhere with just your phone. *** Features *** ► Full-Scene Precision Measurement * 3-in-1 Modes: Screen Protractor / Gyroscope Protractor/ Camera Protractor, adapt to different scenarios. * Smart Angle Preset: Input target angles for instant deviation alerts. * Hyper-Responsive Feedback: Real-time tracking with ≤0.5° accuracy. ► Triple-Calibration Assurance * Auto Dynamic Compensation: Device-position-aware baseline calibration * Anti-Shake Tech: 80% accuracy boost in motion scenes (Gyroscope Mode) * Screen lock: Freeze measurements instantly to prevent accidental touches. ► Contact Us * Email: ceo@noadit.com
Screenshots
Verdict
The clearest difference is rating: Protractor Smart at 4.6 against Protractor's 1.8. Protractor Smart also leads on ratings volume (242 vs 6) and iOS requirement (14.0 vs 16.0). Protractor's advantage is update cadence (every 5 weeks vs every 21 months) and review sentiment (64% vs 40%). On price, ads, in-app purchases 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 and Protractor sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Protractor Smart holds the better App Store score, 4.6 against 1.8. That said, the two scores are not equally well evidenced: Protractor Smart has 242 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 40% of Protractor Smart's written reviews are positive against 64% of Protractor's, so the app with the better star average is not the one people write more warmly about.
Protractor Smart ships an update every 21 months, Protractor every 5 weeks. The most recent releases landed on September 22, 2026 and August 29, 2026 respectively.
| Parameter | Protractor Smart | Protractor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (242 ratings) — better | 1.8 (6 ratings) |
| Positive reviews | 40.4% of reviews | 63.6% of reviews — better |
| Number of ratings | 242 — better | 6 |
| Update frequency | Every 21 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 11 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | ExaMobile S.A. | Noadit, Inc. |
Customer experience
Protractor Smart
Protractor
In-app purchases
Protractor Smart
- AdBlock - Remove ads$1.99
Protractor
- VIP3 Days trial$4.991 Month
- Bubble Tea$0.99
- Sponsor$4.99
- Coffee$4.99
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- Sponsor$19.99
- Sponsor$99.99
Questions
Is Protractor Smart free?
Is Protractor free?
Which has better reviews, Protractor Smart or Protractor?
Do Protractor Smart or Protractor have ads?
Which is updated more often, Protractor Smart or Protractor?
Other comparisons
