# Libre Light Sensor vs Lux Light Meter & Photometer

The clearest difference is in-app purchases: Libre Light Sensor at none against Lux Light Meter & Photometer's 6. Libre Light Sensor also leads on ads (none vs shown). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Lux Light Meter & Photometer sells 6 in-app purchases, starting at $2.99 per 7 days. Libre Light Sensor asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Libre Light Sensor against 4.8 for Lux Light Meter & Photometer. Both are backed by a comparable volume of ratings — 113 and 196 respectively. Written reviews are what separate them: 82% of Libre Light Sensor's written reviews are positive against 85% of Lux Light Meter & Photometer's.

Libre Light Sensor ships an update every 5 weeks, Lux Light Meter & Photometer monthly. Both last shipped on October 19, 2026.

## The numbers

| Metric | Libre Light Sensor | Lux Light Meter & Photometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (113 ratings)](https://appshunter.io/ios/app/libre-light-sensor/id1644439968/reviews)** | [4.8 (196 ratings)](https://appshunter.io/ios/app/lux-light-meter-and-photometer/id6504260709/reviews) |
| Number of ratings | 113 | **196** |
| Positive reviews | 82.4% of reviews | **85.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 54 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Harrington](https://appshunter.io/developer/1603002572) | [ITincubator UAB](https://appshunter.io/developer/1617775851) |

## What reviewers say

### Libre Light Sensor

[App page](https://appshunter.io/ios/app/libre-light-sensor/id1644439968)

Measure ambient light levels in Lux using your iPhone's camera. Optimize sleep quality by understanding light exposure throughout the day and night.

**Highlights:** Measure light in Lux, Utilizes iPhone camera, Optimize sleep quality, Track light exposure

**In-app purchases:** none


### Lux Light Meter & Photometer

[App page](https://appshunter.io/ios/app/lux-light-meter-and-photometer/id6504260709)

Measure light intensity and color temperature for photography, plant care, and workspace optimization. Offers real-time readings, shooting recommendations, and manual control for precise lighting adjustments.

**Highlights:** Real-time color temperature readings, Lux and Foot Candle measurements, Average and Max light values, Shooting recommendations for photographers, Manual control of camera settings

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light Meter App | $2.99 | per 7 days |
| Light Meter App | $2.99 | per 7 days |
| Light Meter App | $5.99 | per month |
| Light Meter App | $5.99 | per month |
| Light Meter App | $14.99 | per year |
| Light Meter App | $14.99 | per year |

**What reviewers like**

- 👍 Feature-rich lighting control
- 👍 Intuitive ambient control
- 👍 Optimal workspace brightness
- 👍 Shutter speed control
- 👍 Outdoor shooting efficiency

**What reviewers complain about**

- 💔 MISLEADING SERVICES


## Frequently asked questions

### Is Libre Light Sensor free?

Libre Light Sensor is free to download, with no in-app purchases.

### Is Lux Light Meter & Photometer free?

Lux Light Meter & Photometer is free to download, with in-app purchases available.

### Which has better reviews, Libre Light Sensor or Lux Light Meter & Photometer?

Libre Light Sensor is rated higher. Libre Light Sensor averages 4.8 out of 5 from 113 ratings, while Lux Light Meter & Photometer averages 4.8 from 196 ratings.

### Do Libre Light Sensor or Lux Light Meter & Photometer have ads?

Lux Light Meter & Photometer shows ads; Libre Light Sensor does not.

### Which is updated more often, Libre Light Sensor or Lux Light Meter & Photometer?

Libre Light Sensor ships an update every 5 weeks, and Lux Light Meter & Photometer monthly. Most recently, Libre Light Sensor was updated on October 19, 2026 and Lux Light Meter & Photometer on October 19, 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.*