# Goniometry App vs Protractor Angle Measure Tool

The clearest difference is in-app purchases: Goniometry App at none against Protractor Angle Measure Tool's 3. Goniometry App also leads on update cadence (daily vs monthly) and iOS requirement (13.0 vs 16.0). Protractor Angle Measure Tool's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Protractor Angle Measure Tool sells 3 in-app purchases, starting at $4.99 per 7 days. Goniometry App asks for nothing beyond the download.

Goniometry App ships an update daily, Protractor Angle Measure Tool monthly. The most recent releases landed on September 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Goniometry App | Protractor Angle Measure Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (169 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087/reviews)** |
| Number of ratings | — | **169** |
| Positive reviews | — | 13.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 79 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Dioneibys Blanco Grudas](https://appshunter.io/developer/1658652313) | [Appcellent](https://appshunter.io/developer/1870956141) |

## What reviewers say

### Goniometry App

[App page](https://appshunter.io/ios/app/goniometry-app/id1670735041)

**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 (3)**

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


## Frequently asked questions

### Is Goniometry App free?

Goniometry App 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.

### Do Goniometry App or Protractor Angle Measure Tool have ads?

Goniometry App shows ads; Protractor Angle Measure Tool does not.

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

Goniometry App ships an update daily, and Protractor Angle Measure Tool monthly. Most recently, Goniometry App was updated on September 11, 2026 and Protractor Angle Measure Tool on September 24, 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.*