Lux Light Meter Pro vs Libre Light Sensor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lux Light Meter Pro
Measure light intensity in lux and foot candles with this 2-in-1 meter. Optimize photography settings, adjust indoor lighting, or prevent eye strain with professional-quality readings directly from your smartphone.
- Real-time lux and foot candle measurements
- Real-time color temperature measurements
- Real-time histogram plotting
- Customizable settings for shutter speed, ISO, aperture
- Front and back camera support
- Intuitive and customizable controls
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Light Meter is a 2-in-1 light intensity (lux) and exposure meter with customizable settings. Whether you want to capture the perfect photo or optimize lighting in any space, Light Meter provides professional-quality readings right on your phone. Forget about expensive professional equipment that you have to carry around. With Light Meter, you can get light intensity data with just one click to choose the best settings for manual or film photography, adjust home, work, or greenhouse lighting, and prevent eye strain from poor lighting. Features: - intuitive and customizable controls - for front and back cam - collects light intensity data in real time - instant lux and foot candle measurements - real-time color temperature measurements - real-time histogram plotting - customizable settings for shutter speed, ISO, aperture - preview and adjust diaphragm settings before shooting Have any questions or suggestions? Write to us: sparkappsfeedback@gmail.com Terms of Use - https://www.iubenda.com/terms-and-conditions/82717056 Privacy Policy - https://www.iubenda.com/privacy-policy/82717056
Libre Light Sensor
Measure ambient light levels in Lux using your iPhone's camera. Optimize sleep quality by understanding light exposure throughout the day and night.
- Measure light in Lux
- Utilizes iPhone camera
- Optimize sleep quality
- Track light exposure
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Measure light levels in any environment. Libre Light Sensor leverages your iPhone's camera to calculate luminosity as measured in Lux. This allows you to determine how much light exposure your eyes are receiving when you wake up, during the day, and before bed in order to optimize your sleep quality.
Screenshots
Verdict
The clearest difference is review sentiment: Libre Light Sensor at 82% against Lux Light Meter Pro's 21%. Libre Light Sensor also leads on rating (4.8 vs 3.9) and in-app purchases (none vs 4). Lux Light Meter Pro's advantage is ratings volume (5.1K vs 113) and device support (3 vs 1). On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lux Light Meter Pro sells 3 in-app purchases, starting at $1.99 per month. Libre Light Sensor asks for nothing beyond the download.
Libre Light Sensor holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Lux Light Meter Pro has 5.1K ratings behind it against 113, so its average is the more settled of the two. Written reviews point the same way: 21% of Lux Light Meter Pro's written reviews are positive against 82% of Libre Light Sensor's.
Lux Light Meter Pro ships an update every 3 months, Libre Light Sensor every 5 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Lux Light Meter Pro | Libre Light Sensor |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (5.1K ratings) | 4.8 (113 ratings) — better |
| Positive reviews | 21.3% of reviews | 82.4% of reviews — better |
| Number of ratings | 5.1K — better | 113 |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15 — better | 16.0 |
| Further details — not scored | ||
| Size | 19 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Marina Polyanskaya | John Harrington |
Customer experience
Lux Light Meter Pro
Libre Light Sensor
Bugs and requests
Lux Light Meter Pro
Reported bugs
3 issues- Readings stuck at 0 lux regardless of light conditions
- Frequent crashes and freezes
- Inability to switch between front and rear cameras
Requested features
3 requests- Ability to save and review past measurements
- More detailed instructions and guidance on proper usage
- Improved accuracy and calibration options
Libre Light Sensor
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lux Light Meter Pro
- Premium Access3 Days trial$1.991 Month
- Premium Access2 variants$14.991 Year
- Pro Mode$9.99
Libre Light Sensor
No in-app purchases
Questions
Is Lux Light Meter Pro free?
Is Libre Light Sensor free?
Which has better reviews, Lux Light Meter Pro or Libre Light Sensor?
Do Lux Light Meter Pro or Libre Light Sensor have ads?
Which is updated more often, Lux Light Meter Pro or Libre Light Sensor?
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