Light Meter LM vs PPFD METER

Turn your smartphone into a professional-grade light meter. Measure illuminance (lux/foot-candle) and color temperature (CCT in Kelvin) with unmatched accuracy — trusted by photographers, engineers, and lighting professionals worldwide. Why waste money on a hardware meter when you’re already carrying one in your pocket? The LM-3000 offers the same quality and usability as a traditional hardware light meter. Developed by optics scientists at the Zurich University of Applied Sciences, LM-3000 is the only light meter app scientifically validated for accuracy. It achieves professional-grade precision by leveraging your iPhone's front-facing camera sensor with advanced RAW image processing. Unlike relying on estimates like other apps, it adheres to the ISO/CIE 19476 standard, ensuring measurements you can trust for critical applications. MEASUREMENTS ⎷ Illuminance in lux or foot-candles ⎷ Correlated color temperature in kelvin FEATURES ⎷ Industry-leading accuracy, matching professional high-end lux meters ⎷ Pre-calibrated for your specific device ⎷ Excellent low light sensitivity to detect light pollution ⎷ No ads ⎷ No Bluetooth and location permission required ⎷ In-app manual ⎷ Save peak reading ⎷ HOLD function with acoustic signal ⎷ Custom calibration option to align readings to another meter DIFFUSER REQUIRED Like every real light meter, the LM-3000 requires a diffuser to measure accurately. A diffuser scatters incoming light evenly on the sensor and prevents hotspots. While it may sound complex, the solution is surprisingly easy. You have two options: 1) Easily build a diffuser yourself in less than a minute using standard printer paper. This is accurate enough for most use cases. 2) Get the dedicated Diffuser Accessory (free worldwide shipping) for best accuracy and convenience. More details on https://lightray.io/diffuser/ (!) Avoid apps that don’t require a diffuser! They are inaccurate because they ignore the basic physics of light measurement. TRY BEFORE YOU BUY The LM-3000 is free to download and comes with a free trial period. The trial period lasts for two non-consecutive days, giving you enough time to see if the app fits your needs. The status of your free trial will be shown as the "battery level" on the top right of the LM-3000's display and on the "Battery Status" screen. Once your light meter's "battery" is depleted, you may choose a Charging Option to keep using the app. You can pick what works best for you: → Single Charge — top-up for another 48 hours (perfect for occasional use), → Continuous Charging — a monthly subscription (great if you use it regularly), → Unlimited Battery — a one-time purchase for unlimited lifetime access LM-3000 is the result of over five years of dedicated research and development, ensuring you get a tool that is precise and reliable. Every in-app purchase supports future development and helps keep the app ad-free for everyone. As a member of 1% for the Planet, we donate at least one percent of all revenue to environmental non-profits — this is our way of giving back. ACCURACY Accuracy is not an afterthought — Apps developed by Lightray Innovation are developed according to the ISO/CIE 19476 standard. Thanks to RAW image processing and a default calibration per device model they’re able to match the performance of high quality traditional hardware light meters. To ensure quality we rigorously test our apps regularly on upcoming devices. DOWNLOAD FOR FREE. TRUSTED BY MILLIONS. LM-3000 is the go-to light meter for photographers, professionals, engineers, and lighting enthusiasts who rely on accurate measurements — not estimates or guesswork. Download for free today and experience the difference! See the app in action: https://youtu.be/EJW7NfE2qCk Terms and Conditions: https://lightray.io/lightmeter/terms/

Perfect for both seasoned gardeners and beginners, PPFD Meter sets itself apart from standard grow light meter apps with its comprehensive features and intuitive design. Using your phone's built-in sensors or the acclaimed UNI-T UT383 BT sensor via Bluetooth, PPFD Meter provides precise and reliable light measurements. This accuracy is essential for understanding and optimizing the light your plants receive, ensuring their health and growth. PPFD Meter is more than a light measurement tool; it's a guide to understanding your plants' needs. It converts LUX readings into PPFD (Photosynthetic Photon Flux Density) and DLI (Daily Light Integral), providing critical insights for your lighting setup. Customize up to five different settings profiles for various environments or growth stages, making your plant care as unique as your garden. Advanced Light Mapping and Analysis Step into a new era of light management with PPFD Meter's advanced light mapping capabilities. Our exclusive PAR and DLI Maps feature offers a vivid, detailed representation of light distribution across your grow area, enabling precise adjustments for optimal plant growth. But that's just the beginning: In-Depth Light Analysis: Measure light uniformity to ensure even plant growth, and evaluate your setup's PPF (Photosynthetic Photon Flux) to understand the total light output. Efficiency and Consumption Insights: Assess the efficiency of your lighting system in converting energy into usable light. Track the daily total energy consumption to manage your energy usage and environmental impact effectively. Comprehensive DLI Tracking: Monitor the Daily Light Integral, a key factor in regulating plant health and growth cycles, ensuring your plants receive the right amount of light each day. These advanced features make PPFD Meter not just an app, but a vital partner in your indoor gardening journey. It’s a leap forward from typical grow light meter apps, offering a depth of analysis and customization that truly enhances your plant care experience. Download PPFD Meter today and embark on a journey of precision and expertise in plant care. Your plants will thrive like never before! Privacy Policy: https://www.ppfd.app/pp Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/