# Bubble level and Clinometer vs Protractor Edge

The clearest difference is price: Protractor Edge at Free against Bubble level and Clinometer's $0.99. Protractor Edge also leads on rating (4.5 vs 4.1) and ratings volume (55 vs 9). Bubble level and Clinometer's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

Protractor Edge is free to download; Bubble level and Clinometer costs $0.99 up front. Protractor Edge sells 2 in-app purchases, starting at $1.99 per year. Bubble level and Clinometer asks for nothing beyond the download.

Protractor Edge holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: Protractor Edge has 55 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 94% of Bubble level and Clinometer's written reviews are positive against 70% of Protractor Edge's, so the app with the better star average is not the one people write more warmly about.

Bubble level and Clinometer ships an update every 7 months, Protractor Edge every 43 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Bubble level and Clinometer | Protractor Edge |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.1 (9 ratings)](https://appshunter.io/ios/app/bubble-level-and-clinometer/id304152770/reviews) | **[4.5 (55 ratings)](https://appshunter.io/ios/app/protractor-edge-clinometer/id1198499762/reviews)** |
| Number of ratings | 9 | **55** |
| Positive reviews | **94.3% of reviews** | 69.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 7 months** | Every 43 months |
| Monetization | **Free** | Freemium |
| Size | 13 MB | 21 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Breitling](https://appshunter.io/developer/286215120) | [嵩 张](https://appshunter.io/developer/1091921941) |

## What reviewers say

### Bubble level and Clinometer

[App page](https://appshunter.io/ios/app/bubble-level-and-clinometer/id304152770)

This app provides precise slope and angle measurements using your device's sensors. It offers multiple units, adjustable lock sensitivity, and a peer mode for measuring angles between two devices. Customize the display with different color schemes and prevent sleep mode with adjustable auto-lock.

**Highlights:** Multiple unit modes (degrees, percentage, rise/run), Adjustable dial rotation, Motion-sensitive lock feature, Volume button lock, Peer mode for two-device measurements, Fullscreen mode, Customizable color schemes

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Bubble level and Clinometer free?

Bubble level and Clinometer costs $0.99, with no in-app purchases.

### Is Protractor Edge free?

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

### Which has better reviews, Bubble level and Clinometer or Protractor Edge?

Protractor Edge is rated higher. Bubble level and Clinometer averages 4.1 out of 5 from 9 ratings, while Protractor Edge averages 4.5 from 55 ratings.

### Do Bubble level and Clinometer or Protractor Edge have ads?

Protractor Edge shows ads; Bubble level and Clinometer does not.

### Which is updated more often, Bubble level and Clinometer or Protractor Edge?

Bubble level and Clinometer ships an update every 7 months, and Protractor Edge every 43 months. Most recently, Bubble level and Clinometer was updated on October 13, 2026 and Protractor Edge on October 11, 2026.

---

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