# Protractor+ vs mini Bubble Level

The clearest difference is review sentiment: mini Bubble Level at 73% against Protractor+'s 15%. mini Bubble Level also leads on rating (4.6 vs 4.1) and in-app purchases (none vs 1). Protractor+'s advantage is ads (none vs shown) and ratings volume (10K vs 26). On price, update cadence and device support there is nothing between them.

Both are free to download. Protractor+ sells 1 one-off in-app purchase. mini Bubble Level asks for nothing beyond the download.

mini Bubble Level holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: Protractor+ has 10K ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 15% of Protractor+'s written reviews are positive against 73% of mini Bubble Level's.

Protractor+ ships an update every 2 months, mini Bubble Level every 3 months. The most recent releases landed on September 25, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Protractor+ | mini Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (10K ratings)](https://appshunter.io/ios/app/protractor-plus/id631311541/reviews) | **[4.6 (26 ratings)](https://appshunter.io/ios/app/mini-bubble-level/id1111162128/reviews)** |
| Number of ratings | **10K** | 26 |
| Positive reviews | 14.9% of reviews | **72.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 21 MB | 9 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tue Nguyen Minh](https://appshunter.io/developer/434811167) | [Mert TUZER](https://appshunter.io/developer/1111162127) |

## What reviewers say

### Protractor+

[App page](https://appshunter.io/ios/app/protractor-plus/id631311541)

Transform your device into a versatile angle measurement tool. Easily measure angles in both degrees and radians with an intuitive interface. Ideal for quick and precise angle readings.

**Highlights:** Angle measurement, Degrees and radians, Intuitive visual control, Elegant design, Pocket protractor functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features | $1.99 | one-time |

**What reviewers like**

- 🚀 Quick angle measurement
- 👍 Useful for physics labs
- 👍 Easy to use

**What reviewers complain about**

- 🔒 Degrees feature locked behind paywall
- 🐛 Unreliable camera feature
- 🔋 Frequent timeouts force upgrade
- 💰 Aggressive monetization tactics

**Reported bugs**

- Camera feature not working as expected
- Angle measurements not accurate
- Frequent app crashes

**Requested features**

- Ability to measure in degrees without upgrade
- Improved accuracy and responsiveness
- Removal of timeouts and paywalls


### mini Bubble Level

[App page](https://appshunter.io/ios/app/mini-bubble-level/id1111162128)

This app provides accurate horizontal and vertical angle measurements using your device's sensors. It helps with alignment tasks, offers haptic feedback, and supports dark mode for comfortable use in various environments.

**Highlights:** Precise angle measurements, Reference point marking, Haptic feedback for alignment, Dark mode support, Intuitive interface

**In-app purchases:** none


## Frequently asked questions

### Is Protractor+ free?

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

### Is mini Bubble Level free?

mini Bubble Level is free to download, with no in-app purchases.

### Which has better reviews, Protractor+ or mini Bubble Level?

mini Bubble Level is rated higher. Protractor+ averages 4.1 out of 5 from 10K ratings, while mini Bubble Level averages 4.6 from 26 ratings.

### Do Protractor+ or mini Bubble Level have ads?

mini Bubble Level shows ads; Protractor+ does not.

### Which is updated more often, Protractor+ or mini Bubble Level?

Protractor+ ships an update every 2 months, and mini Bubble Level every 3 months. Most recently, Protractor+ was updated on September 25, 2026 and mini Bubble Level on June 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.*