# Protractor Edge vs Keub

The clearest difference is rating: Keub at 5.0 against Protractor Edge's 4.5. Keub also leads on in-app purchases (none vs 2) and ads (none vs shown). Protractor Edge's advantage is ratings volume (55 vs 1) and iOS requirement (9.0 vs 16.4). 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. Keub asks for nothing beyond the download.

Keub holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Protractor Edge has 55 ratings behind it against 1, so its average is the more settled of the two.

Protractor Edge ships an update every 43 months, Keub every 5 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | Protractor Edge | Keub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (55 ratings)](https://appshunter.io/ios/app/protractor-edge-clinometer/id1198499762/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keub/id6761382024/reviews)** |
| Number of ratings | **55** | 1 |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 43 months | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 21 MB | 65 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [嵩 张](https://appshunter.io/developer/1091921941) | [Keubit](https://appshunter.io/developer/1889257103) |

## 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 |


### Keub

[App page](https://appshunter.io/ios/app/keub/id6761382024)

This platform offers a secure and convenient way to rent smart lockers for storing belongings like luggage or shopping bags. Easily book, access, and manage your rentals through an intuitive mobile interface, receiving digital receipts for every transaction.

**Highlights:** Smart locker booking, Secure locker access via PIN, Rental management, Digital receipts, Profile management, Intuitive user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Protractor Edge free?

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

### Is Keub free?

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

### Which has better reviews, Protractor Edge or Keub?

Keub is rated higher. Protractor Edge averages 4.5 out of 5 from 55 ratings, while Keub averages 5.0 from 1 ratings.

### Do Protractor Edge or Keub have ads?

Protractor Edge shows ads; Keub does not.

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

Protractor Edge ships an update every 43 months, and Keub every 5 days. Most recently, Protractor Edge was updated on October 16, 2026 and Keub 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.*