# Lux Light Meter for Mobile vs Libre Light Sensor

The clearest difference is review sentiment: Libre Light Sensor at 82% against Lux Light Meter for Mobile's 18%. Libre Light Sensor also leads on in-app purchases (none vs 7) and ads (none vs shown). Lux Light Meter for Mobile's advantage is update cadence (fortnightly vs every 5 weeks) and device support (3 vs 1). On price and ratings volume there is nothing between them.

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

Libre Light Sensor holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 229 and 113 respectively. Written reviews point the same way: 18% of Lux Light Meter for Mobile's written reviews are positive against 82% of Libre Light Sensor's.

Lux Light Meter for Mobile ships an update fortnightly, Libre Light Sensor every 5 weeks. Both last shipped on October 15, 2026.

## The numbers

| Metric | Lux Light Meter for Mobile | Libre Light Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (229 ratings)](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220/reviews) | **[4.8 (113 ratings)](https://appshunter.io/ios/app/libre-light-sensor/id1644439968/reviews)** |
| Number of ratings | **229** | 113 |
| Positive reviews | 17.5% of reviews | **82.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 50 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [WeBrain](https://appshunter.io/developer/1578514377) | [John Harrington](https://appshunter.io/developer/1603002572) |

## What reviewers say

### Lux Light Meter for Mobile

[App page](https://appshunter.io/ios/app/lux-light-meter-for-mobile/id1638732220)

This app provides accurate and easy-to-use light measurements in lux and foot candles. It's ideal for photographers, plant owners, and anyone needing to assess ambient light levels in various spaces. Features include real-time color temperature measurement and calculation of the daily light integral.

**Highlights:** Real-time color temperature measurement, Lux and foot candle measurements, Daily light integral (DLI) calculation, Average and Max values, Optimal shooting value selection, Adjustable shooting values (shutter speed, aperture, ISO)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lux Light Meter Pro | $2.99 | per 7 days |
| Light Meter 1 Week | $2.99 | per 7 days |
| Lux Light Meter | $5.99 | per month |
| Light Meter | $5.99 | per month |
| Lux Meter | $7.99 | per year |
| Light Meter Pro | $14.99 | per year |
| Light Meter for Mobile | $14.99 | per year |


### 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


## Frequently asked questions

### Is Lux Light Meter for Mobile free?

Lux Light Meter for Mobile is free to download, with in-app purchases available.

### Is Libre Light Sensor free?

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

### Which has better reviews, Lux Light Meter for Mobile or Libre Light Sensor?

Libre Light Sensor is rated higher. Lux Light Meter for Mobile averages 4.5 out of 5 from 229 ratings, while Libre Light Sensor averages 4.8 from 113 ratings.

### Do Lux Light Meter for Mobile or Libre Light Sensor have ads?

Lux Light Meter for Mobile shows ads; Libre Light Sensor does not.

### Which is updated more often, Lux Light Meter for Mobile or Libre Light Sensor?

Lux Light Meter for Mobile ships an update fortnightly, and Libre Light Sensor every 5 weeks. Most recently, Lux Light Meter for Mobile was updated on October 15, 2026 and Libre Light Sensor on October 15, 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.*