228+ iOS apps curated and reviewed
The best lux meter free apps on iPhone average 4.6★ across 228+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.
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 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.
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.
Accurately measure ambient light levels in Lux or Foot Candles using your phone's camera. This tool is ideal for photography, comparing light sources, or indoor gardening. It's designed for ease of use and provides precise readings.
Measure ambient light levels in lux or foot-candles instantly. Useful for photography, plant care, or verifying brightness for various tasks. Offers advanced features like color temperature and measurement history for premium users.
This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.
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.
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.
This app measures light intensity in lux and provides real-time exposure suggestions for photography. It offers customizable settings for shutter speed, aperture, and ISO, with options for both front and back cameras. It's designed for personal use to optimize lighting and capture better photos.
This app functions as a precise and user-friendly light meter using your phone's built-in sensors. It measures illuminance, color temperature, PPFD/PAR, DLI, and luminous flux in real-time. It also includes a calculator for various illumination parameters and allows sharing or saving of measurements.
This utility app precisely measures light intensity in LUX and color temperature in Kelvin. It provides real-time exposure readings for photoshoots and filming, helping users adjust lighting for optimal results.
This app provides professional-grade light metering for photography and videography, offering precise exposure calculations and support for various camera settings and filters. It excels in low-light conditions and offers versatile applications beyond creative media.
This app uses your device's camera to measure sunlight intensity. It helps you determine the best locations in your home for your houseplants to receive optimal light for growth.
This app measures light intensity for plants, converting LUX to PPFD and DLI. It offers advanced light mapping, uniformity analysis, and efficiency insights to optimize plant growth. Customize profiles for different environments and growth stages.
Measure light intensity in LUX to ensure optimal lighting for concentration at your desk or home office. This app helps you create a productive and comfortable workspace by recommending illuminants.
Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.