# Protractor Angle Measure Tool vs Triangle Calculator

The clearest difference is rating: Protractor Angle Measure Tool at 4.4 against Triangle Calculator's 3.7. Protractor Angle Measure Tool also leads on ratings volume (176 vs 3) and update cadence (monthly vs every 4 months). Triangle Calculator's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and monetization model 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 and Triangle Calculator sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Protractor Angle Measure Tool holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Protractor Angle Measure Tool has 176 ratings behind it against 3, so its average is the more settled of the two.

Protractor Angle Measure Tool ships an update monthly, Triangle Calculator every 4 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Protractor Angle Measure Tool | Triangle Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (176 ratings)](https://appshunter.io/ios/app/protractor-angle-measure-tool/id6742701087/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/triangle-calculator-solver/id6757908425/reviews) |
| Number of ratings | **176** | 3 |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 79 MB | 15 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appcellent](https://appshunter.io/developer/1870956141) | [Vaghani Keyur](https://appshunter.io/developer/1164464860) |

## 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 |


### Triangle Calculator

[App page](https://appshunter.io/ios/app/triangle-calculator-solver/id6757908425)

This geometry tool simplifies trigonometry and triangle calculations. It provides quick and accurate results for various measurements, including angles, sides, area, and advanced geometric properties. Ideal for students, professionals, and anyone needing precise calculations.

**Highlights:** Triangle angle calculation, Side length and hypotenuse calculation, Area and perimeter calculation, Advanced geometry calculations, User-friendly interface, Accurate results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $2.99 | per year |


## Frequently asked questions

### Is Protractor Angle Measure Tool free?

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

### Is Triangle Calculator free?

Triangle Calculator is free to download, with in-app purchases available.

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

Protractor Angle Measure Tool is rated higher. Protractor Angle Measure Tool averages 4.4 out of 5 from 176 ratings, while Triangle Calculator averages 3.7 from 3 ratings.

### Do Protractor Angle Measure Tool or Triangle Calculator have ads?

Neither Protractor Angle Measure Tool nor Triangle Calculator shows ads.

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

Protractor Angle Measure Tool ships an update monthly, and Triangle Calculator every 4 months. Most recently, Protractor Angle Measure Tool was updated on October 12, 2026 and Triangle Calculator on October 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.*