# Protractor Edge vs TriangleData

The clearest difference is review sentiment: Protractor Edge at 70% against TriangleData's 0%. Protractor Edge also leads on iOS requirement (9.0 vs 12.0). TriangleData's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Protractor Edge sells 2 in-app purchases, starting at $1.99 per year. TriangleData asks for nothing beyond the download.

Protractor Edge ships an update every 43 months, TriangleData every 8 days. The most recent releases landed on October 3, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Protractor Edge | TriangleData |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (55 ratings)](https://appshunter.io/ios/app/protractor-edge-clinometer/id1198499762/reviews)** | — |
| Number of ratings | **55** | — |
| Positive reviews | **69.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 43 months | **Every 8 days** |
| Monetization | Freemium | **Free** |
| Size | 21 MB | 25 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嵩 张](https://appshunter.io/developer/1091921941) | [Kiryl Sabko](https://appshunter.io/developer/1573151750) |

## What reviewers say

### Protractor Edge

[App page](https://appshunter.io/ios/app/protractor-edge-clinometer/id1198499762)

Measure angles directly on your device without taking photos or placing the angle on screen. This app offers a unique and efficient way to determine degrees, saving you time with its handy assistant functionality.

**Highlights:** Direct angle measurement on device, Intuitive line dragging interface, Measures angles in photos (Premium), Measures from camera view (Premium), Ad-free experience (Premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $1.99 | per year |
| Remove Ads | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Protractor Edge free?

Protractor Edge is free to download, with in-app purchases available.

### Is TriangleData free?

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

### Do Protractor Edge or TriangleData have ads?

Protractor Edge shows ads; TriangleData does not.

### Which is updated more often, Protractor Edge or TriangleData?

Protractor Edge ships an update every 43 months, and TriangleData every 8 days. Most recently, Protractor Edge was updated on October 3, 2026 and TriangleData on September 19, 2026.

---

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