# Camera Protractor vs RICH SOLAR

The clearest difference is price: RICH SOLAR at Free against Camera Protractor's $4.99. RICH SOLAR also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 1). Camera Protractor's advantage is ratings volume (6 vs 1). On update cadence, ads, monetization model and device support there is nothing between them.

RICH SOLAR is free to download; Camera Protractor costs $4.99 up front. Camera Protractor sells 1 one-off in-app purchase. RICH SOLAR asks for nothing beyond the download.

RICH SOLAR holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Camera Protractor has 6 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Camera Protractor | RICH SOLAR |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/camera-protractor-angle-meter/id614594487/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rich-solar/id6743063298/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 26.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | Free |
| Size | 11 MB | 37 MB |
| Requires iOS | 15.8 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [Rich Solar, Inc.](https://appshunter.io/developer/1801087879) |

## What reviewers say

### Camera Protractor

[App page](https://appshunter.io/ios/app/camera-protractor-angle-meter/id614594487)

Measure angles and lengths of real-world objects using your iPhone's camera. This tool offers a digital protractor and ruler, allowing precise measurements of anything you can capture, from small items to large structures. It features an intuitive interface and is always available.

**Highlights:** Digital protractor and ruler, Measure real-life objects with camera, Precise angle measurement (0-180 degrees), Intuitive UI design, Full screen display, Email support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera Protractor Pro | $6.99 | one-time |


### RICH SOLAR

[App page](https://appshunter.io/ios/app/rich-solar/id6743063298)

Monitor and control RICH SOLAR products like lithium batteries and solar charge controllers directly from your smartphone. Update device firmware and explore features through a convenient demo mode.

**Highlights:** Live data monitoring, Device configuration, Firmware updates, Demo mode for product exploration, Bluetooth connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is Camera Protractor free?

Camera Protractor costs $4.99, and also offers in-app purchases.

### Is RICH SOLAR free?

RICH SOLAR is free to download, with no in-app purchases.

### Which has better reviews, Camera Protractor or RICH SOLAR?

RICH SOLAR is rated higher. Camera Protractor averages 3.8 out of 5 from 6 ratings, while RICH SOLAR averages 5.0 from 1 ratings.

### Do Camera Protractor or RICH SOLAR have ads?

Neither Camera Protractor nor RICH SOLAR shows ads.

### Which is updated more often, Camera Protractor or RICH SOLAR?

Camera Protractor ships an update fortnightly, and RICH SOLAR fortnightly. Most recently, Camera Protractor was updated on November 6, 2026 and RICH SOLAR on November 4, 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.*