Photo Protractor vs Protractor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Photo Protractor
This app functions as a digital protractor, allowing users to measure angles and radians directly from photos. Simply take a picture, position the measurement area, and adjust the lines to get precise readings. It's an easy-to-use tool for quick angle calculations.
- Measure angles from photos
- Display angles and radians
- Adjustable measurement lines
- Easy-to-use interface
- Take pictures for measurement
Read full descriptionHide full description
分度器アプリです。【使い方】写真を撮ります。移動ボタンを押して、写真の測定部分を測定円の中心にスライドスライド。角度ボタン、始線ボタンで測定線をクルクル移動すれば角度とラジアンが表示されます。簡単でしょ。（＾＾）／ It is a protractor app. [How to use] it will take a picture. Press the Move button, and slide slide the measurement part of the photo in the center of the measuring circle. Angle button, you will see the angle and radian if twirl move the measuring line in the initial line button. It is easy. (^^) /
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
Read full descriptionHide full description
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: Photo Protractor at 4.1 against Protractor's 1.8. Photo Protractor also leads on in-app purchases (none vs 6) and review sentiment (79% vs 64%). On price, 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
Both are free to download. Protractor sells 6 in-app purchases, starting at $4.99 per month. Photo Protractor asks for nothing beyond the download.
Photo Protractor holds the better App Store score, 4.1 against 1.8. That said, the two scores are not equally well evidenced: Photo Protractor has 39 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 79% of Photo Protractor's written reviews are positive against 64% of Protractor's.
Photo Protractor ships an update every 2 months, Protractor every 5 weeks. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.
| Parameter | Photo Protractor | Protractor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (39 ratings) — better | 1.8 (6 ratings) |
| Positive reviews | 79.3% of reviews — better | 63.6% of reviews |
| Number of ratings | 39 — better | 6 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 11 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Mayumi Kato | Noadit, Inc. |
Customer experience
Photo Protractor
Protractor
In-app purchases
Photo Protractor
No in-app purchases
Protractor
- VIP3 Days trial$4.991 Month
- Bubble Tea$0.99
- Sponsor$4.99
- Coffee$4.99
Show 2 moreShow fewer
- Sponsor$19.99
- Sponsor$99.99
Questions
Is Photo Protractor free?
Is Protractor free?
Which has better reviews, Photo Protractor or Protractor?
Do Photo Protractor or Protractor have ads?
Which is updated more often, Photo Protractor or Protractor?
Other comparisons
