# TriangleData vs Protractor for Angle Measuring

The clearest difference is review sentiment: Protractor for Angle Measuring at 48% against TriangleData's 0%. TriangleData's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Protractor for Angle Measuring sells 5 in-app purchases, starting at $0.99 per 7 days. TriangleData asks for nothing beyond the download.

TriangleData ships an update every 8 days, Protractor for Angle Measuring every 3 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | TriangleData | Protractor for Angle Measuring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (1.1K ratings)](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160/reviews)** |
| Number of ratings | — | **1.1K** |
| Positive reviews | 0.0% of reviews | **48.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 120 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kiryl Sabko](https://appshunter.io/developer/1573151750) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## What reviewers say

### TriangleData

[App page](https://appshunter.io/ios/app/triangledata/id1632799728)

This utility app helps you calculate triangle angles and data. It can determine if a corner is 90 degrees by taking measurements and inputting them into the app. You can also use it to calculate right triangle data.

**Highlights:** Calculate triangle angles, Check for 90-degree corners, Input measurements for calculation, Calculate right triangle data

**Features:** macOS Compatibility

**In-app purchases:** none


### Protractor for Angle Measuring

[App page](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160)

Transform your iPhone into a precision angle measurement tool. Effortlessly assess angles in real-time using touch and camera modes, measure multiple angles simultaneously, and customize your tools for accuracy and simplicity. Ideal for quick, reliable on-the-go assessments.

**Highlights:** Real-time angle measurement, Touch and camera modes, Simultaneous measurement of unlimited angles, Plumb bob pendulum for tilt determination, Tool color customization, Measure angles in photos

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $0.99 | per 7 days |
| Weekly Access with Trial | $1.99 | per 7 days |
| Weekly Access | $1.99 | per 7 days |
| Yearly Access | $3.99 | per year |
| Yearly Access | $4.99 | per year |

**What reviewers like**

- 👍 Useful for surveying and measuring angles
- 💡 Interesting use of camera to overlay protractor
- 👍 Helps with specific use cases like golf setup
- 👍 Provides a clutter-free protractor experience

**What reviewers complain about**

- 🐛 Difficulty using the protractor tool and angle measurement
- 🐛 Inability to zoom in/out when measuring angles in photos
- 🐛 Inaccurate angle measurements in some cases

**Reported bugs**

- Protractor tool is hard to use and requires multiple tries
- Angle measurements do not match real-world angles

**Requested features**

- Add more instructions and guidance for using the protractor tool
- Improve the zoom functionality when measuring angles in photos
- Enhance the accuracy of angle measurements


## Frequently asked questions

### Is TriangleData free?

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

### Is Protractor for Angle Measuring free?

Protractor for Angle Measuring is free to download, with in-app purchases available.

### Do TriangleData or Protractor for Angle Measuring have ads?

Protractor for Angle Measuring shows ads; TriangleData does not.

### Which is updated more often, TriangleData or Protractor for Angle Measuring?

TriangleData ships an update every 8 days, and Protractor for Angle Measuring every 3 weeks. Most recently, TriangleData was updated on November 3, 2026 and Protractor for Angle Measuring on November 8, 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.*