# Protractor (Angle measurement) vs UnifAI

The clearest difference is ads: UnifAI at none against Protractor (Angle measurement)'s shown. UnifAI also leads on update cadence (fortnightly vs every 5 weeks) and iOS requirement (11.0 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Protractor (Angle measurement) ships an update every 5 weeks, UnifAI fortnightly. The most recent releases landed on September 26, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Protractor (Angle measurement) | UnifAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 68.1% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 63 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EONSOFT](https://appshunter.io/developer/899851112) | [YPB Group Ltd](https://appshunter.io/developer/1392072916) |

## 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


### UnifAI

[App page](https://appshunter.io/ios/app/unifai/id1659586705)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Protractor (Angle measurement) free?

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

### Is UnifAI free?

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

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

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

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

Protractor (Angle measurement) ships an update every 5 weeks, and UnifAI fortnightly. Most recently, Protractor (Angle measurement) was updated on September 26, 2026 and UnifAI on September 12, 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.*