# SeeLevel vs Protractor Edge

The clearest difference is price: Protractor Edge at Free against SeeLevel's $0.99. Protractor Edge also leads on rating (4.5 vs 3.8) and ratings volume (55 vs 18). SeeLevel's advantage is in-app purchases (none vs 2) and ads (none vs shown). On review sentiment, device support and iOS requirement there is nothing between them.

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

Protractor Edge holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 18 and 55 respectively. Written reviews point the same way: 67% of SeeLevel's written reviews are positive against 70% of Protractor Edge's.

SeeLevel ships an update every 6 months, Protractor Edge every 43 months. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SeeLevel | Protractor Edge |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.8 (18 ratings)](https://appshunter.io/ios/app/seelevel-visual-clinometer/id333213338/reviews) | **[4.5 (55 ratings)](https://appshunter.io/ios/app/protractor-edge-clinometer/id1198499762/reviews)** |
| Number of ratings | 18 | **55** |
| Positive reviews | 67.4% of reviews | **69.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 months** | Every 43 months |
| Monetization | **Free** | Freemium |
| Size | 5 MB | 21 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sten Kaiser](https://appshunter.io/developer/309325742) | [嵩 张](https://appshunter.io/developer/1091921941) |

## What reviewers say

### SeeLevel

[App page](https://appshunter.io/ios/app/seelevel-visual-clinometer/id333213338)

Measure angles and align objects using your device's camera. This tool offers a visual clinometer, distance and height estimation, and a traceable level. It's useful for various alignment and measurement tasks, with adjustable units and zoom for accuracy.

**Highlights:** Measure angles relative to horizon, Estimate object tilt, Calculate object height/distance, Traceable level tool, Camera zoom for accuracy, Conventional level mode

**Features:** 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 SeeLevel free?

SeeLevel 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, SeeLevel or Protractor Edge?

Protractor Edge is rated higher. SeeLevel averages 3.8 out of 5 from 18 ratings, while Protractor Edge averages 4.5 from 55 ratings.

### Do SeeLevel or Protractor Edge have ads?

Protractor Edge shows ads; SeeLevel does not.

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

SeeLevel ships an update every 6 months, and Protractor Edge every 43 months. Most recently, SeeLevel was updated on October 13, 2026 and Protractor Edge on October 16, 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.*