# Carbones vs Smart Level & AR Ruler

The clearest difference is in-app purchases: Carbones at none against Smart Level & AR Ruler's 4. Carbones also leads on iOS requirement (13.0 vs 15.6). Smart Level & AR Ruler's advantage is device support. On price there is nothing between them.

Both are free to download. Smart Level & AR Ruler sells 4 in-app purchases, starting at $4.99 per 7 days. Carbones asks for nothing beyond the download.

## The numbers

| Metric | Carbones | Smart Level & AR Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (485 ratings)](https://appshunter.io/ios/app/smart-level-and-ar-ruler/id6698865336/reviews)** |
| Number of ratings | — | **485** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 78 MB | 42 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Soluzioni Opensource M3 S.r.L.](https://appshunter.io/developer/1634774290) | [卓 张](https://appshunter.io/developer/1765233606) |

## What reviewers say

### Carbones

[App page](https://appshunter.io/ios/app/carbones/id1634774288)

**In-app purchases:** none


### Smart Level & AR Ruler

[App page](https://appshunter.io/ios/app/smart-level-and-ar-ruler/id6698865336)

This app transforms your iPhone into a versatile digital toolbox. It offers a wide array of measurement and utility tools, utilizing advanced AI and computer vision for precise results.  From measuring lengths and areas to using a protractor and level, it helps you tackle various tasks.

**Highlights:** Length, area, height, distance measurement, Protractor and unit conversion, Level and light sensor, Decibel meter, Scientific calculator, Magnifying glass and compass

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| VIP - Week | $9.99 | per 7 days |
| Monthly Subscription | $19.99 | per month |
| VIP - Year | $69.99 | per year |


## Frequently asked questions

### Is Carbones free?

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

### Is Smart Level & AR Ruler free?

Smart Level & AR Ruler is free to download, with in-app purchases available.

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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.*