# Protractor Edge vs Rubix DnA

The clearest difference is in-app purchases: Rubix DnA at none against Protractor Edge's 2. Rubix DnA also leads on ads (none vs shown) and update cadence (every 2 months vs every 43 months). Protractor Edge's advantage is iOS requirement (9.0 vs 12.0). 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. Rubix DnA asks for nothing beyond the download.

Protractor Edge ships an update every 43 months, Rubix DnA every 2 months. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Protractor Edge | Rubix DnA |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 43 months | **Every 2 months** |
| Monetization | Freemium | — |
| Size | 21 MB | 54 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [嵩 张](https://appshunter.io/developer/1091921941) | [Nube iO](https://appshunter.io/developer/1551911366) |

## 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 |


### Rubix DnA

[App page](https://appshunter.io/ios/app/rubix-dna/id6468864401)

**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 Rubix DnA free?

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

### Do Protractor Edge or Rubix DnA have ads?

Protractor Edge shows ads; Rubix DnA does not.

### Which is updated more often, Protractor Edge or Rubix DnA?

Protractor Edge ships an update every 43 months, and Rubix DnA every 2 months. Most recently, Protractor Edge was updated on October 16, 2026 and Rubix DnA on October 10, 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.*