# Goniometer vs Protractor Angle Meter

The clearest difference is review sentiment: Protractor Angle Meter at 100% against Goniometer's 0%. Protractor Angle Meter also leads on rating (5.0 vs 1.0). Goniometer's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 17.6). On price, ratings volume, update cadence and ads 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 Meter holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Goniometer's written reviews are positive against 100% of Protractor Angle Meter's.

Goniometer ships an update monthly, Protractor Angle Meter fortnightly. The most recent releases landed on July 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Goniometer | Protractor Angle Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/goniometer/id6736895084/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protractor-angle-meter/id6778436306/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 56 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Guilin GemRed Sensor Technology Co., Ltd.](https://appshunter.io/developer/1279222567) | [Romiick LLC](https://appshunter.io/developer/1716146475) |

## What reviewers say

### 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


### Protractor Angle Meter

[App page](https://appshunter.io/ios/app/protractor-angle-meter/id6778436306)

This app allows you to measure angles from photos using your device's camera or existing images. Add multiple measurements with customizable colors and labels, and view results in various units. Save your work automatically and export high-quality images of your measurements.

**Highlights:** Measure angles from photos, Live camera or photo library input, Multiple angle measurements per photo, Customizable color and labels, Degrees, radians, or slope percentage output, Precision Loupe for accuracy, Automatic saving

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Goniometer free?

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

### Is Protractor Angle Meter free?

Protractor Angle Meter is free to download, with no in-app purchases.

### Which has better reviews, Goniometer or Protractor Angle Meter?

Protractor Angle Meter is rated higher. Goniometer averages 1.0 out of 5 from 2 ratings, while Protractor Angle Meter averages 5.0 from 1 ratings.

### Do Goniometer or Protractor Angle Meter have ads?

Neither Goniometer nor Protractor Angle Meter shows ads.

### Which is updated more often, Goniometer or Protractor Angle Meter?

Goniometer ships an update monthly, and Protractor Angle Meter fortnightly. Most recently, Goniometer was updated on July 8, 2026 and Protractor Angle Meter on September 22, 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.*