# SMART Mirror vs Protractor for Angle Measuring

The clearest difference is rating: Protractor for Angle Measuring at 4.5 against SMART Mirror's 2.9. Protractor for Angle Measuring also leads on review sentiment (49% vs 21%) and update cadence (every 2 weeks vs every 3 months). SMART Mirror's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support 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. SMART Mirror asks for nothing beyond the download.

Protractor for Angle Measuring holds the better App Store score, 4.5 against 2.9. That said, the two scores are not equally well evidenced: Protractor for Angle Measuring has 1K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 21% of SMART Mirror's written reviews are positive against 49% of Protractor for Angle Measuring's.

SMART Mirror ships an update every 3 months, Protractor for Angle Measuring every 2 weeks. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SMART Mirror | Protractor for Angle Measuring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (15 ratings)](https://appshunter.io/ios/app/smart-mirror/id1569415474/reviews) | **[4.5 (1K ratings)](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160/reviews)** |
| Number of ratings | 15 | **1K** |
| Positive reviews | 20.8% of reviews | **49.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 112 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SMART Technologies](https://appshunter.io/developer/433502125) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## What reviewers say

### SMART Mirror

[App page](https://appshunter.io/ios/app/smart-mirror/id1569415474)

Wirelessly mirror your device's screen to a compatible interactive display. Simply open the app, enter a connection code, and start sharing your content instantly.

**Highlights:** Wireless screen mirroring, Connect via code, Compatible with SMART Boards, iQ embedded computing support, Easy setup

**In-app purchases:** none


### 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


## Frequently asked questions

### Is SMART Mirror free?

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

### Is Protractor for Angle Measuring free?

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

### Which has better reviews, SMART Mirror or Protractor for Angle Measuring?

Protractor for Angle Measuring is rated higher. SMART Mirror averages 2.9 out of 5 from 15 ratings, while Protractor for Angle Measuring averages 4.5 from 1K ratings.

### Do SMART Mirror or Protractor for Angle Measuring have ads?

Protractor for Angle Measuring shows ads; SMART Mirror does not.

### Which is updated more often, SMART Mirror or Protractor for Angle Measuring?

SMART Mirror ships an update every 3 months, and Protractor for Angle Measuring every 2 weeks. Most recently, SMART Mirror was updated on October 6, 2026 and Protractor for Angle Measuring on October 17, 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.*