# Protractor (Angle measurement) vs Goniometer

The clearest difference is review sentiment: Protractor (Angle measurement) at 68% against Goniometer's 0%. Protractor (Angle measurement) also leads on rating (3.6 vs 1.0) and ratings volume (10 vs 2). Goniometer's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Protractor (Angle measurement) holds the better App Store score, 3.6 against 1.0. That said, the two scores are not equally well evidenced: Protractor (Angle measurement) has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of Protractor (Angle measurement)'s written reviews are positive against 0% of Goniometer's.

Protractor (Angle measurement) ships an update every 5 weeks, Goniometer monthly. The most recent releases landed on October 13, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Protractor (Angle measurement) | Goniometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (10 ratings)](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/goniometer/id6736895084/reviews) |
| Number of ratings | **10** | 2 |
| Positive reviews | **68.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Ad-supported | **Free** |
| Size | 7 MB | 29 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [GemRed](https://appshunter.io/developer/1279222567) |

## What reviewers say

### Protractor (Angle measurement)

[App page](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865)

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.

**Highlights:** Camera-based angle measurement, Digital protractor functionality, Measure angles of objects, Real-world angle determination

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Free and functional
- 👍 Accurate measurements
- 👍 Useful for homework
- 👍 Handy when needed
- 👍 Better than others

**What reviewers complain about**

- 👎 Hard to hold steady
- 👎 Camera is blurry
- 👎 Ads can be intrusive
- 👎 Difficult to use on paper
- 👎 Time limit on free version

**Reported bugs**

- Camera is always blurry
- Ads cover buttons
- App is a ghost app, cannot open
- Time limit makes it unusable
- Measures only in radians (free)

**Requested features**

- 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


### Goniometer

[App page](https://appshunter.io/ios/app/goniometer/id6736895084)

Easily record joint motion range using Bluetooth connection with a digital goniometer. Track personal rehabilitation training progress for joint movement. Remember to consult a doctor before making medical decisions.

**Highlights:** Bluetooth connectivity with digital goniometer, Record joint range of motion, Track personal rehabilitation status, Monitor joint movement progress, Easy data recording

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protractor (Angle measurement) free?

Protractor (Angle measurement) is free to download, with no in-app purchases.

### Is Goniometer free?

Goniometer is free to download, with no in-app purchases.

### Which has better reviews, Protractor (Angle measurement) or Goniometer?

Protractor (Angle measurement) is rated higher. Protractor (Angle measurement) averages 3.6 out of 5 from 10 ratings, while Goniometer averages 1.0 from 2 ratings.

### Do Protractor (Angle measurement) or Goniometer have ads?

Protractor (Angle measurement) shows ads; Goniometer does not.

### Which is updated more often, Protractor (Angle measurement) or Goniometer?

Protractor (Angle measurement) ships an update every 5 weeks, and Goniometer monthly. Most recently, Protractor (Angle measurement) was updated on October 13, 2026 and Goniometer on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*