# Lumin+ vs Protractor°

The clearest difference is rating: Protractor° at 5.0 against Lumin+'s 1.6. Protractor° also leads on update cadence (every 2 days vs every 2 months). Lumin+'s advantage is in-app purchases (none vs 1) and ratings volume (7 vs 1). On price, ads and monetization model there is nothing between them.

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

Protractor° holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: Lumin+ has 7 ratings behind it against 1, so its average is the more settled of the two.

Lumin+ ships an update every 2 months, Protractor° every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lumin+ | Protractor° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (7 ratings)](https://appshunter.io/ios/app/lumin-plus/id1589884596/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protractor-angle-finder/id6822147049/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 31 MB | 13 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ifootage International (HK) Limited](https://appshunter.io/developer/1214219832) | [Just2us Pte Ltd](https://appshunter.io/developer/293971188) |

## What reviewers say

### Lumin+

[App page](https://appshunter.io/ios/app/lumin-plus/id1589884596)

This app offers comprehensive control for professional lighting equipment, allowing users to manage individual or multiple light sets. It supports various color modes, effects, and presets, providing a convenient tool for photographers and videographers to create custom lighting arrangements.

**Highlights:** Control individual and multiple light sets, Support for CCT, HSI, RGBW, XY color modes, GEL color paper simulation, Special effects and music synchronization, Lighting pre-set functions, Professional lighting support for creators

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Protractor°

[App page](https://appshunter.io/ios/app/protractor-angle-finder/id6822147049)

This app transforms your iPhone Duo into a digital protractor. Measure angles on paper or between surfaces by simply folding the device to match the desired angle and reading the degrees. Save and organize your measurements for later use.

**Highlights:** Measure angles on paper, Measure angles between surfaces, Uses iPhone Duo's folding hinge, Record and save angle readings, Organize measurements by date

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protractor Lifetime Access | $3.99 | one-time |


## Frequently asked questions

### Is Lumin+ free?

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

### Is Protractor° free?

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

### Which has better reviews, Lumin+ or Protractor°?

Protractor° is rated higher. Lumin+ averages 1.6 out of 5 from 7 ratings, while Protractor° averages 5.0 from 1 ratings.

### Do Lumin+ or Protractor° have ads?

Neither Lumin+ nor Protractor° shows ads.

### Which is updated more often, Lumin+ or Protractor°?

Lumin+ ships an update every 2 months, and Protractor° every 2 days. Most recently, Lumin+ was updated on November 3, 2026 and Protractor° on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*