LuxMeter vs Candela

LuxMeter turns your iPhone camera into a precise light meter, giving you instant illuminance readings in lux, foot-candles, or exposure value (EV). Whether you are checking lighting conditions for work, photography, or plant care, LuxMeter delivers real-time measurements derived directly from your camera's exposure metadata using the industry-standard APEX formula. The live gauge updates continuously as you move the camera, and the automatic brightness category — from Moonlight to Direct Sun — tells you at a glance what kind of environment you are in. Hold any reading to freeze the display and share it, or save a session to keep a timestamped log of your measurements. Key features: - Real-time lux readings powered by camera exposure metadata - Displays lux, foot-candles (fc), and exposure value (EV) - Animated gauge with live min, avg, and max statistics - Hold mode to freeze and share a reading - Session history with bar chart and inline notes - EV calibration offset to match a reference meter - Built-in lux reference table covering natural light, office, home, photography, and plant growth - Clean, distraction-free design with dark mode support

Candela turns the camera into a genuinely useful light meter. Point your iPhone and read the light around you — live illuminance in lux or foot-candles, exposure value (EV), and color temperature in Kelvin — on one beautiful instrument with a camera-iris dial that opens and closes with the light. One meter, three jobs: PHOTO / FILM • Live EV at ISO 100, plus a full exposure-triangle solver — lock any two of ISO, aperture, and shutter and Candela computes the third. • Color temperature readout for white balance. • Perfect for film shooters, manual photographers, and anyone learning exposure. PLANT • Convert measured light into PPFD and a projected Daily Light Integral (DLI) for the hours your plant gets light. • Instantly see whether a windowsill is deep shade, low, medium, bright-indirect, or direct sun — with example plants for each level. • Stop guessing why your monstera is leggy. ROOM / WELLBEING • Compare a spot against recommended light levels for reading, kitchen work, an office desk, and more. • A clear verdict — too dim, comfortable, or bright — plus a color-temperature note for evening, sleep-friendly lighting. Built for trust: • Calibrate to any reference in one tap so your readings match a meter you trust. • Lux or foot-candles, your choice. • Save a "spot" to remember a reading, with a tidy history. • A built-in Guide explains plant light needs, room standards, and a photographer's EV chart. Private by design: • Everything runs on your device. Camera frames are analyzed live and are never saved, photographed, or sent anywhere. • No account. No tracking. No ads. Data Not Collected. A note on accuracy: a phone camera is a reflected/scene light meter, so readings are a well-calibrated estimate rather than a laboratory instrument. For incident-style readings, meter off a neutral gray card. Calibration lets you dial Candela in to a reference.