# Protractor for Angle Measuring vs Resonance

The clearest difference is ads: Resonance at none against Protractor for Angle Measuring's shown. Resonance also leads on rating (5.0 vs 4.5). Protractor for Angle Measuring's advantage is update cadence (every 2 weeks vs every 4 months) and ratings volume (1.1K vs 1). On price, in-app purchases, monetization model 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 and Resonance sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Resonance holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Protractor for Angle Measuring has 1.1K ratings behind it against 1, so its average is the more settled of the two.

Protractor for Angle Measuring ships an update every 2 weeks, Resonance every 4 months. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Protractor for Angle Measuring | Resonance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (1.1K ratings)](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/resonance/id6654889672/reviews)** |
| Number of ratings | **1.1K** | 1 |
| Positive reviews | 49.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 112 MB | 70 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) | [Benjamin Probett](https://appshunter.io/developer/1561394321) |

## 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


### Resonance

[App page](https://appshunter.io/ios/app/resonance/id6654889672)

Transform your smartphone into a professional vibration analysis tool. Measure, record, and analyze vibrations in real-time with spectral analysis, on-site and quickly. Supports external Bluetooth sensors and offers powerful analysis tools for various applications.

**Highlights:** Real-time spectral analysis, Power Spectral Density (PSD) and FFT, Bluetooth sensor support, Damping ratio estimation, Export data as CSV, Generate PDF reports

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $1.99 | per month |
| Yearly Premium Subscription | $6.99 | per year |
| Lifetime Access - Pro Features | $6.99 | one-time |


## Frequently asked questions

### Is Protractor for Angle Measuring free?

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

### Is Resonance free?

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

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

Resonance is rated higher. Protractor for Angle Measuring averages 4.5 out of 5 from 1.1K ratings, while Resonance averages 5.0 from 1 ratings.

### Do Protractor for Angle Measuring or Resonance have ads?

Protractor for Angle Measuring shows ads; Resonance does not.

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

Protractor for Angle Measuring ships an update every 2 weeks, and Resonance every 4 months. Most recently, Protractor for Angle Measuring was updated on October 27, 2026 and Resonance on October 10, 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.*