Protractor+ vs Digital Angle Finder
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
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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
Digital Angle Finder
Measure angles precisely using your device's sensors. It functions as both a protractor and a 3D angle meter, allowing you to determine angles between surfaces or lines on a plane with high accuracy. Save your measurements by taking photos with the angle recorded.
- Precise angle measurement
- 3D angle measurement
- Protractor mode
- Save measurements with photos
- High accuracy (1-degree error)
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Digital Angle Finder is an app for precise measurement of angles, simply by moving your device. The "Digital Angle Finder" app measures the angle of the device, using the accelerometer and gyroscope. Just place your device against two surfaces in turn and "Digital Angle Finder" will give you the angle between them. In the protractor mode you can also determine the angle between lines on a plane: in order to do so align the edge of your device alternately against the sides of the angle. The accuracy of angles measurement is rather high: the error is only one degree! You'll appreciate the ability to save the measurement by taking a photo with the measured angle recorded on it. We are sure that you will like the design of this app. Digital Angle Finder is an app that adds a new feature to your device which you have never imagined!
Screenshots
Verdict
Protractor+ and Digital Angle Finder both sit at 4.1 stars, but that hides the real split: 54% of Digital Angle Finder's written reviews are positive against 15% of Protractor+'s. Digital Angle Finder also leads on in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.6). Protractor+'s advantage is ratings volume (10K vs 233). On price, rating, update cadence and ads 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 1 one-off in-app purchase. Digital Angle Finder asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.1 for Protractor+ against 4.1 for Digital Angle Finder. That said, the two scores are not equally well evidenced: Protractor+ has 10K ratings behind it against 233, 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 54% of Digital Angle Finder's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.
| Parameter | Protractor+ | Digital Angle Finder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (10K ratings) | 4.1 (233 ratings) |
| Positive reviews | 14.9% of reviews | 54.3% of reviews — better |
| Number of ratings | 10K — better | 233 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Tue Nguyen Minh | ALEXEY BRILEV |
Customer experience
Protractor+
Digital Angle Finder
User reviews
Protractor+
From 10K App Store ratingsWhat we love
- 🚀 Quick angle measurement
- 👍 Useful for physics labs
- 👍 Easy to use
Room to improve
- 🔒 Degrees feature locked behind paywall
- 🐛 Unreliable camera feature
- 🔋 Frequent timeouts force upgrade
- 💰 Aggressive monetization tactics
Digital Angle Finder
From 233 App Store ratingsWhat we love
- 👍 Amazing app, does what it claims
- 👍 No annoying ads or up-sells
- 👍 No tracking
- 👍 Very useful app, love it
- 👍 Easy to used
Room to improve
- 🐛 Rien ne se passe
- 🐛 Nicht das was ich gesucht habe
- 🐛 Dauert lange bis Ergebnis angezeigt
- 🐛 Horrible app doesn’t work
- 🐛 Gives wrong measurements (172 degrees)
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
Digital Angle Finder
Reported bugs
8 issues- No measurements detected
- App doesn't work
- Incorrect measurements (e.g., 172 degrees, 2 and 178 degrees, 179 degrees)
- App doesn't work on vertical angles
- New update ruined the app, only works on still surfaces
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- App is outdated and doesn't work on older iPhones (iPhone 6s Plus)
- App is slow to process measurements
- App is unintuitive to use
Requested features
7 requests- Add a spirit level function
- Add a function to start and end measurement by pressing a button
- Ability to manually measure angle on a photo
- Display mode for surface vs. edge measurement
- Clarify zero point and measurement range for length measurement
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- Add vibration signal for ready and measured states
- Add ability to measure angle directly in photos
In-app purchases
Protractor+
- Pro Features$1.99
Digital Angle Finder
No in-app purchases
Questions
Is Protractor+ free?
Is Digital Angle Finder free?
Which has better reviews, Protractor+ or Digital Angle Finder?
Do Protractor+ or Digital Angle Finder have ads?
Which is updated more often, Protractor+ or Digital Angle Finder?
Other comparisons
