# Protractor Angle Measure Tool vs Goniometer

The clearest difference is in-app purchases: Goniometer at none against Protractor Angle Measure Tool's 4. Goniometer also leads on update cadence (every 4 days vs monthly). Protractor Angle Measure Tool's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement 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 ships an update monthly, Goniometer every 4 days. The most recent releases landed on November 8, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Protractor Angle Measure Tool | Goniometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (179 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087/reviews)** | — |
| Number of ratings | **179** | — |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 76 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Appcellent](https://appshunter.io/developer/1870956141) | [heekyung moon](https://appshunter.io/developer/6779193748) |

## What reviewers say

### 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 |


### Goniometer

[App page](https://appshunter.io/ios/app/goniometer-joint-rom/id6784830053)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protractor Angle Measure Tool free?

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

### Is Goniometer free?

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

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

Goniometer shows ads; Protractor Angle Measure Tool does not.

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

Protractor Angle Measure Tool ships an update monthly, and Goniometer every 4 days. Most recently, Protractor Angle Measure Tool was updated on November 8, 2026 and Goniometer on November 7, 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.*