# Libre Light Sensor vs Lux Light Meter Pro for Photo

The clearest difference is in-app purchases: Libre Light Sensor at none against Lux Light Meter Pro for Photo's 8. Libre Light Sensor also leads on review sentiment (82% vs 53%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Lux Light Meter Pro for Photo sells 8 in-app purchases, starting at $1.99 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 Pro for Photo. Both are backed by a comparable volume of ratings — 187 and 447 respectively. Written reviews are what separate them: 82% of Libre Light Sensor's written reviews are positive against 53% of Lux Light Meter Pro for Photo's.

Libre Light Sensor ships an update every 5 weeks, Lux Light Meter Pro for Photo every 3 weeks. Both last shipped on October 27, 2026.

## The numbers

| Metric | Libre Light Sensor | Lux Light Meter Pro for Photo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (187 ratings)](https://appshunter.io/ios/app/libre-light-sensor/id1644439968/reviews)** | [4.8 (447 ratings)](https://appshunter.io/ios/app/lux-light-meter-pro-for-photo/id6447008772/reviews) |
| Number of ratings | 187 | **447** |
| Positive reviews | **82.4% of reviews** | 52.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 1 MB | 156 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | +4 |
| Developer | [John Harrington](https://appshunter.io/developer/1603002572) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## 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 Pro for Photo

[App page](https://appshunter.io/ios/app/lux-light-meter-pro-for-photo/id6447008772)

This app provides precise light measurements in lux and foot candles, along with real-time color temperature readings. It offers shooting value recommendations and allows manual adjustment of camera settings for photographers, plant enthusiasts, and workspace optimization.

**Highlights:** Real-time color temperature measurement, Lux and foot candles light measurements, Average and max light values, Real-time shooting value recommendations, Adjustable shutter speed, aperture, and ISO, Plant light optimization, Workspace illumination tuning

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Weekly Access | $2.99 | per 7 days |
| Light Meter & Exposure Value | $2.99 | per 7 days |
| Monthly Access | $5.99 | per month |
| Light Meter Premium | $5.99 | per month |
| Yearly Access | $7.99 | per year |
| Lux Light Meter PRO | $19.99 | per year |
| Yearly Access | $19.99 | per year |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 📏 Accurate light measurements and lux readings
- 🌱 Excellent for plant care and monitoring light levels
- 📷 Valuable tool for photographers and lighting professionals
- 🎨 Real-time color temperature readings

**What reviewers complain about**

- 🐛 App crashes frequently
- 💳 Paywall and subscription model not clearly communicated
- 🚫 Difficult or impossible to unsubscribe
- ❓ Lack of documentation and user guidance
- 🤔 Confusing indoor vs outdoor settings explanation

**Reported bugs**

- Constant crashes during use
- Artificial grow light LED readings appear inaccurate
- Indoor setting measurements too low for accuracy

**Requested features**

- Clear documentation explaining indoor vs outdoor lux settings
- Comprehensive user guide and help documentation
- Explanation of technical differences in measurement modes
- Better onboarding to showcase free features before sign-up


## Frequently asked questions

### Is Libre Light Sensor free?

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

### Is Lux Light Meter Pro for Photo free?

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

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

Libre Light Sensor is rated higher. Libre Light Sensor averages 4.8 out of 5 from 187 ratings, while Lux Light Meter Pro for Photo averages 4.8 from 447 ratings.

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

Neither Libre Light Sensor nor Lux Light Meter Pro for Photo shows ads.

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

Libre Light Sensor ships an update every 5 weeks, and Lux Light Meter Pro for Photo every 3 weeks. Most recently, Libre Light Sensor was updated on October 27, 2026 and Lux Light Meter Pro for Photo on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*