# Protractor (Angle measurement) vs Protractor Smart

The clearest difference is rating: Protractor Smart at 4.6 against Protractor (Angle measurement)'s 3.4. Protractor Smart also leads on ads (none vs shown) and ratings volume (242 vs 5). Protractor (Angle measurement)'s advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 21 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Protractor Smart sells 1 one-off in-app purchase. Protractor (Angle measurement) asks for nothing beyond the download.

Protractor Smart holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: Protractor Smart has 242 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 68% of Protractor (Angle measurement)'s written reviews are positive against 40% of Protractor Smart's, so the app with the better star average is not the one people write more warmly about.

Protractor (Angle measurement) ships an update every 5 weeks, Protractor Smart every 21 months. Both last shipped on September 22, 2026.

## The numbers

| Metric | Protractor (Angle measurement) | Protractor Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865/reviews) | **[4.6 (242 ratings)](https://appshunter.io/ios/app/protractor-smart/id1076530001/reviews)** |
| Number of ratings | 5 | **242** |
| Positive reviews | **68.1% of reviews** | 40.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 21 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 7 MB | 11 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### Protractor (Angle measurement)

[App page](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865)

Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.

**Highlights:** Camera-based angle measurement, Digital protractor functionality, Measure angles of objects, Real-world angle determination

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Free and functional
- 👍 Accurate measurements
- 👍 Useful for homework
- 👍 Handy when needed
- 👍 Better than others

**What reviewers complain about**

- 👎 Hard to hold steady
- 👎 Camera is blurry
- 👎 Ads can be intrusive
- 👎 Difficult to use on paper
- 👎 Time limit on free version

**Reported bugs**

- Camera is always blurry
- Ads cover buttons
- App is a ghost app, cannot open
- Time limit makes it unusable
- Measures only in radians (free)

**Requested features**

- Ability to freeze image
- Ability to use photos for measurement
- Upload a still image and overlay protractor
- Improve accuracy with shaky hands
- Add option to take a picture and measure


### Protractor Smart

[App page](https://appshunter.io/ios/app/protractor-smart/id1076530001)

This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.

**Highlights:** Camera-based angle measurement, Touch measure mode, Plumb bob measure for slopes, Polygon measurement (premium), Screenshot functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdBlock - Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is Protractor (Angle measurement) free?

Protractor (Angle measurement) is free to download, with no in-app purchases.

### Is Protractor Smart free?

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

### Which has better reviews, Protractor (Angle measurement) or Protractor Smart?

Protractor Smart is rated higher. Protractor (Angle measurement) averages 3.4 out of 5 from 5 ratings, while Protractor Smart averages 4.6 from 242 ratings.

### Do Protractor (Angle measurement) or Protractor Smart have ads?

Protractor (Angle measurement) shows ads; Protractor Smart does not.

### Which is updated more often, Protractor (Angle measurement) or Protractor Smart?

Protractor (Angle measurement) ships an update every 5 weeks, and Protractor Smart every 21 months. Most recently, Protractor (Angle measurement) was updated on September 22, 2026 and Protractor Smart on September 22, 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.*