# Goniometer vs Protractor Angle Measure Tool

The clearest difference is rating: Protractor Angle Measure Tool at 4.4 against Goniometer's 1.0. Protractor Angle Measure Tool also leads on ratings volume (176 vs 2) and review sentiment (12% vs 0%). Goniometer's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Protractor Angle Measure Tool sells 4 in-app purchases, starting at $4.99 per 7 days. Goniometer asks for nothing beyond the download.

Protractor Angle Measure Tool holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Protractor Angle Measure Tool has 176 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Goniometer's written reviews are positive against 12% of Protractor Angle Measure Tool's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Goniometer | Protractor Angle Measure Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/goniometer/id6736895084/reviews) | **[4.4 (176 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087/reviews)** |
| Number of ratings | 2 | **176** |
| Positive reviews | 0.0% of reviews | **11.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 79 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [GemRed](https://appshunter.io/developer/1279222567) | [Appcellent](https://appshunter.io/developer/1870956141) |

## 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 Measure Tool

[App page](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087)

This tool transforms your device into a precise angle measurement instrument. It's ideal for DIY projects, construction, and renovations, offering real-time readings in various formats. Get professional-grade accuracy for all your angled surface needs.

**Highlights:** Precise angle measurement, Vertical and horizontal orientations, Multiple measurement units (degrees, radians, gradians), Target angle alerts with audio/vibration, Real-time precision readings, Apple Watch support with haptic feedback

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protractor Weekly | $4.99 | per 7 days |
| Protractor Weekly with Trial | $6.99 | per 7 days |
| Protractor Weekly with Trial | $8.99 | per 7 days |
| Protractor Annual | $39.99 | per year |


## Frequently asked questions

### Is Goniometer free?

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

### Is Protractor Angle Measure Tool free?

Protractor Angle Measure Tool is free to download, with in-app purchases available.

### Which has better reviews, Goniometer or Protractor Angle Measure Tool?

Protractor Angle Measure Tool is rated higher. Goniometer averages 1.0 out of 5 from 2 ratings, while Protractor Angle Measure Tool averages 4.4 from 176 ratings.

### Do Goniometer or Protractor Angle Measure Tool have ads?

Neither Goniometer nor Protractor Angle Measure Tool shows ads.

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

Goniometer ships an update monthly, and Protractor Angle Measure Tool monthly. Most recently, Goniometer was updated on September 27, 2026 and Protractor Angle Measure Tool on October 12, 2026.

---

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