Light Meter vs Libre Light Sensor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Meter
This application acts as a portable light meter, allowing users to measure light intensity in lux and foot candles. It offers real-time readings, a log library for saving measurements, and the ability to calibrate with professional devices for enhanced accuracy. The app supports both front and rear cameras and saves scene images.
- Real-time light intensity measurement
- Lux and foot candle readings
- Saveable log library
- Calibration with professional illuminometer
- Front and rear camera support
- Scene image saving
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Light Meter - Lux and foot candle measurement tool in your pocket! Light Meter for Film Photography. Light meter in your pocket! The only app you really need to measure light intensity. You can calibrated with professional Illuminometer. Features: - Exclusive simplicity and convenience of use with unique and attractive design. - Real-time measurements. - Result are save-able into log library. - All result are comparable with Variable Lux, foot candle, ISO and Date in log library. - Scene Image are save-able into camera-roll - Front and rear camera supported. - Lux and foot candle measurement. - Option to Calibrated with light sensitivity. To ensure the accuracy of measurements. you can calibrated with professional high-precision illuminometer. Note : Light Meter app is not a replacement for a professional device and should be used for private purposes only. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
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 price: Libre Light Sensor at Free against Light Meter's $2.99. Libre Light Sensor also leads on rating (4.8 vs 4.2) and review sentiment (82% vs 50%). Light Meter's advantage is device support (3 vs 1) and iOS requirement (13 vs 16.0). On ads and in-app purchases 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
Libre Light Sensor is free to download; Light Meter costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Libre Light Sensor holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Libre Light Sensor has 113 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Light Meter's written reviews are positive against 82% of Libre Light Sensor's.
Light Meter ships an update every 48 months, Libre Light Sensor every 5 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.
| Parameter | Light Meter | Libre Light Sensor |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.2 (5 ratings) | 4.8 (113 ratings) — better |
| Positive reviews | 50.0% of reviews | 82.4% of reviews — better |
| Number of ratings | 5 | 113 — better |
| Update frequency | Every 48 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | John Harrington |
Customer experience
Light Meter
Libre Light Sensor
In-app purchases
Light Meter
No in-app purchases
Libre Light Sensor
No in-app purchases
Questions
Is Light Meter free?
Is Libre Light Sensor free?
Which has better reviews, Light Meter or Libre Light Sensor?
Do Light Meter or Libre Light Sensor have ads?
Which is updated more often, Light Meter or Libre Light Sensor?
Other comparisons
