# Voltgo Bluetooth vs Protractor for Angle Measuring

The clearest difference is rating: Voltgo Bluetooth at 5.0 against Protractor for Angle Measuring's 4.5. Voltgo Bluetooth also leads on in-app purchases (none vs 5) and ads (none vs shown). Protractor for Angle Measuring's advantage is ratings volume (1K vs 1) and update cadence (every 2 weeks vs every 2 months). 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. Voltgo Bluetooth asks for nothing beyond the download.

Voltgo Bluetooth 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 1K ratings behind it against 1, so its average is the more settled of the two.

Voltgo Bluetooth ships an update every 2 months, Protractor for Angle Measuring every 2 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Voltgo Bluetooth | Protractor for Angle Measuring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/voltgo-bluetooth/id6449036442/reviews)** | [4.5 (1K ratings)](https://appshunter.io/ios/app/protractor-for-angle-measuring/id6474609160/reviews) |
| Number of ratings | 1 | **1K** |
| Positive reviews | — | 49.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 112 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen zetara power system Co.,LTD](https://appshunter.io/developer/1774419082) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## What reviewers say

### Voltgo Bluetooth

[App page](https://appshunter.io/ios/app/voltgo-bluetooth/id6449036442)

Monitor your device's battery health in real-time. This tool app uses Bluetooth to display crucial metrics like current, temperature, and voltage.

**Highlights:** Monitor battery currency, Check battery temperature, View battery voltage, Bluetooth connectivity, Battery health status

**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 Voltgo Bluetooth free?

Voltgo Bluetooth 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, Voltgo Bluetooth or Protractor for Angle Measuring?

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

### Do Voltgo Bluetooth or Protractor for Angle Measuring have ads?

Protractor for Angle Measuring shows ads; Voltgo Bluetooth does not.

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

Voltgo Bluetooth ships an update every 2 months, and Protractor for Angle Measuring every 2 weeks. Most recently, Voltgo Bluetooth was updated on October 5, 2026 and Protractor for Angle Measuring on October 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.*