LightMeter Pro vs LumenLeaf

LightMeter Pro turns your iPhone into a professional light meter — for photographers, filmmakers, and plant growers alike. PRECISE LIGHT MEASUREMENT - Real-time Lux, Foot-candle, and EV readings from your camera sensor - Color temperature in Kelvin with visual warm/cool bar - Continuous metering with smooth, responsive updates FULL MANUAL CONTROL - Set ISO, shutter speed, and aperture manually — just like a Sekonic or Gossen - Lock any parameter and let the others auto-adjust - Standard photography stops for all three values - Tap to switch between front and rear camera PLANT & GROW LIGHT MODE - Switch to Plant mode for PPFD readings (µmol/m²/s) - DLI (Daily Light Integral) calculator for optimal plant growth - Light source presets: LED, HPS, Fluorescent, Sunlight - Adjustable photoperiod (4-24h) for accurate DLI AI SCENE ANALYSIS - Point your camera at any scene and get instant lighting analysis - AI identifies scene type, lighting quality, and mood - Actionable recommendations to improve your setup - 10 scenario presets: Portrait, Product, Interview, Cinematic, and more DESIGNED FOR PROFESSIONALS - Live camera viewfinder with overlay controls - Premium dark interface — built for on-set use - Haptic feedback on every interaction - No ads. No clutter. Just precision. SUBSCRIPTION - 3 free AI scans per day - Pro unlocks unlimited AI analysis, manual shutter & aperture control - Weekly, annual, and lifetime plans available Perfect for photographers, DPs, gaffers, content creators, interior designers, plant parents, and anyone who works with light. AI & DATA PRIVACY AI Scene Analysis uses Anthropic's Claude technology. When you use this feature, your photo is sent securely to Anthropic's servers for processing. Images are not stored after analysis. No personal data is collected or shared. See our privacy policy for details. Privacy Policy: https://www.easytech-agency.net/privacy/lightmeter_pro Terms of Use: https://www.easytech-agency.net/terms

LumenLeaf turns your phone into a real PAR / PPFD grow light meter for monstera, fiddle leaf fig, pothos, snake plant, succulents, orchids, microgreens, herbs, hydroponics, grow tents and legal home cultivation — all free, offline, with no account, no ads, and no subscription. Measure photosynthetically active radiation (PAR / PPFD), Daily Light Integral (DLI), illuminance (lux / foot-candle) and color temperature (Kelvin) directly with your phone's camera and ambient light sensor. WHAT YOU CAN MEASURE - PPFD in µmol/m²/s — real-time photon flux density - DLI in mol/m²/d — daily light integral with photoperiod input - Lux and foot-candle illuminance - Color temperature in Kelvin (CCT) - Per-light-source readings: Sunlight, White LED, HPS, CMH, Fluorescent, Mixed WHY LUMENLEAF - 100% free — every feature, every plant preset, no paywalls - No account, no email, no sign-up - Works fully offline - Available in 20 languages from launch - Honest about accuracy — we tell you when you're on camera mode vs ALS estimate - No physical hardware to buy — interactive printer-paper diffuser walkthrough - Zero data collection, no analytics SDK, no advertising IDs PERFECT FOR - Houseplant parents — monstera, fiddle leaf, pothos, snake plant, calathea, ZZ - Microgreen growers - Indoor herb gardens — basil, mint, rosemary, oregano - Succulents, cacti and orchids - Hydroponic and aeroponic setups - Grow tent hobbyists - Aquarium plant keepers (v1.1) - Legal home cultivation WHAT WE MEASURE THAT OTHER APPS HIDE LumenLeaf is the only free grow light meter that openly distinguishes camera-grade readings from ambient light sensor (ALS) estimates. If your phone does not have a calibration profile, we tell you — no silent fallback that quietly halves your accuracy. HOW IT WORKS LumenLeaf uses your phone's rear camera in RAW mode (when supported) for research-grade illuminance, then converts to PPFD using light-source-specific coefficients. On phones without RAW support, we fall back to the ambient light sensor and clearly mark which mode you are on. A simple printer-paper diffuser is required — build one in under 2 minutes with our visual guide.