Violin Tuner vs Protractor (Angle measurement)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Violin Tuner
This application provides accurate tuning notes for the violin, covering the standard G, D, A, and E strings. It's a straightforward tool designed to help musicians achieve precise intonation for their instrument.
- Plays G tuning note
- Plays D tuning note
- Plays A tuning note
- Plays E tuning note
- Simple interface
Read full descriptionHide full description
Plays tuning notes for the violin (G D A E).
Protractor (Angle measurement)
Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.
- Camera-based angle measurement
- Digital protractor functionality
- Measure angles of objects
- Real-world angle determination
Read full descriptionHide full description
You are there when you need a protractor? Here is the absence of a protractor, try using a protractor app. You can measure the angle of the object is reflected in the camera protractor. Try using a protractor protractor various apps, app.
Screenshots
Verdict
The clearest difference is rating: Violin Tuner at 4.3 against Protractor (Angle measurement)'s 3.4. Violin Tuner also leads on ratings volume (1.5K vs 5). Protractor (Angle measurement)'s advantage is update cadence (every 5 weeks vs every 16 months) and review sentiment (68% vs 42%). 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. Neither carries in-app purchases, so what you see is what you pay.
Violin Tuner holds the better App Store score, 4.3 against 3.4. That said, the two scores are not equally well evidenced: Violin Tuner has 1.5K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 42% of Violin Tuner's written reviews are positive against 68% of Protractor (Angle measurement)'s, so the app with the better star average is not the one people write more warmly about.
Violin Tuner ships an update every 16 months, Protractor (Angle measurement) every 5 weeks. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.
| Parameter | Violin Tuner | Protractor (Angle measurement) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.5K ratings) — better | 3.4 (5 ratings) |
| Positive reviews | 41.7% of reviews | 68.1% of reviews — better |
| Number of ratings | 1.5K — better | 5 |
| Update frequency | Every 16 months | Every 5 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Alvin Yu | EONSOFT |
Customer experience
Violin Tuner
Protractor (Angle measurement)
User reviews
Violin Tuner
From 1.5K App Store ratingsWhat we love
- 👍 Simple and easy to use
- 🎻 Helpful for tuning violins
- 💡 Useful for beginners
Room to improve
- 🐛 Inconsistent sound quality
- ⏱️ Notes play for too short a duration
- 🔊 Sounds like an entire orchestra playing, not a single violin
Protractor (Angle measurement)
From 5 App Store ratingsWhat we love
- 👍 Free and functional
- 👍 Accurate measurements
- 👍 Useful for homework
- 👍 Handy when needed
- 👍 Better than others
Room to improve
- 👎 Hard to hold steady
- 👎 Camera is blurry
- 👎 Ads can be intrusive
- 👎 Difficult to use on paper
- 👎 Time limit on free version
Bugs and requests
Violin Tuner
Reported bugs
3 issues- Buttons don't always register input
- App crashes or freezes on some devices
- No sound output on certain devices
Requested features
3 requests- Longer note duration
- Chromatic tuner functionality
- Ability to detect if string is flat or sharp
Protractor (Angle measurement)
Reported bugs
8 issues- Camera is always blurry
- Ads cover buttons
- App is a ghost app, cannot open
- Time limit makes it unusable
- Measures only in radians (free)
Show 3 moreShow fewer
- Protractor over camera view, no needle/indication
- App is difficult to use
- Hard to hold still without tripod
Requested features
10 requests- Ability to freeze image
- Ability to use photos for measurement
- Upload a still image and overlay protractor
- Improve accuracy with shaky hands
- Add option to take a picture and measure
Show 5 moreShow fewer
- Stabilize the camera
- Make numbers easier to read
- Remove time limit on free version
- Allow measurement in degrees for free
- Delete purchase history
In-app purchases
Violin Tuner
No in-app purchases
Protractor (Angle measurement)
No in-app purchases
Questions
Is Violin Tuner free?
Is Protractor (Angle measurement) free?
Which has better reviews, Violin Tuner or Protractor (Angle measurement)?
Do Violin Tuner or Protractor (Angle measurement) have ads?
Which is updated more often, Violin Tuner or Protractor (Angle measurement)?
Other comparisons
