# Protractor for Angle Measuring vs COLT 4

The clearest difference is in-app purchases: COLT 4 at none against Protractor for Angle Measuring's 5. COLT 4 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Protractor for Angle Measuring sells 5 in-app purchases, starting at $0.99 per 7 days. COLT 4 asks for nothing beyond the download.

Protractor for Angle Measuring ships an update every 2 weeks, COLT 4 monthly. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Protractor for Angle Measuring | COLT 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1K ratings)](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | 49.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 112 MB | 155 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) | [Straightpoint](https://appshunter.io/developer/1232597225) |

## What reviewers say

### Protractor for Angle Measuring

[App page](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160)

Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.

**Highlights:** Real-time angle measurement, Touch and camera modes, Measure angles in photos, Simultaneous unlimited angle measurement, Tool color customization, Plumb bob pendulum for tilt

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $0.99 | per 7 days |
| Weekly Access with Trial | $1.99 | per 7 days |
| Weekly Access | $1.99 | per 7 days |
| Yearly Access | $3.99 | per year |
| Yearly Access | $4.99 | per year |

**What reviewers like**

- 👍 Useful for surveying and measuring angles
- 💡 Interesting use of camera to overlay protractor
- 👍 Helps with specific use cases like golf setup
- 👍 Provides a clutter-free protractor experience

**What reviewers complain about**

- 🐛 Difficulty using the protractor tool and angle measurement
- 🐛 Inability to zoom in/out when measuring angles in photos
- 🐛 Inaccurate angle measurements in some cases

**Reported bugs**

- Protractor tool is hard to use and requires multiple tries
- Angle measurements do not match real-world angles

**Requested features**

- Add more instructions and guidance for using the protractor tool
- Improve the zoom functionality when measuring angles in photos
- Enhance the accuracy of angle measurements


### COLT 4

[App page](https://appshunter.io/ios/app/colt-4/id6736948101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protractor for Angle Measuring free?

Protractor for Angle Measuring is free to download, with in-app purchases available.

### Is COLT 4 free?

COLT 4 is free to download, with no in-app purchases.

### Do Protractor for Angle Measuring or COLT 4 have ads?

Protractor for Angle Measuring shows ads; COLT 4 does not.

### Which is updated more often, Protractor for Angle Measuring or COLT 4?

Protractor for Angle Measuring ships an update every 2 weeks, and COLT 4 monthly. Most recently, Protractor for Angle Measuring was updated on October 16, 2026 and COLT 4 on October 5, 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.*