# Lux Light Meter · Photometer vs RulerApp

The clearest difference is ads: RulerApp at none against Lux Light Meter · Photometer's shown. RulerApp also leads on device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Lux Light Meter · Photometer | RulerApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/lux-light-meter-photometer/id6759858193/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Monetization | Ad-supported | — |
| Size | 56 MB | 4 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [Mathieu Rancourt](https://appshunter.io/developer/1875378731) |

## What reviewers say

### Lux Light Meter · Photometer

[App page](https://appshunter.io/ios/app/lux-light-meter-photometer/id6759858193)

This tool transforms your iPhone into a precise light meter, offering multiple modes for various environments and photography needs. It records measurement history, allows for notes and comparisons, and supports CSV export for detailed analysis.

**Highlights:** Precise ambient light measurement (lux), Multiple measurement modes (Auto, Outdoor, Indoor, Photo), Measurement history with trend charts, Add notes and favorites to readings, Compare saved readings side-by-side, CSV export for data analysis, EV exposure value for photographers

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

**In-app purchases:** none


### RulerApp

[App page](https://appshunter.io/ios/app/rulerapp/id6771221433)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lux Light Meter · Photometer free?

Lux Light Meter · Photometer is free to download, with no in-app purchases.

### Is RulerApp free?

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

### Do Lux Light Meter · Photometer or RulerApp have ads?

Lux Light Meter · Photometer shows ads; RulerApp does not.

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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.*