Luxmo

Luxmo turns your iPhone into a fast, precise reflected-light meter for photographers. Point it at your scene and read a correct exposure instantly — aperture, shutter and ISO — on a calm, single screen with no clutter. Built for film and analog shooters who want a dependable meter in their pocket, Luxmo is fully offline. No accounts, no ads, no tracking. Nothing you measure ever leaves your device. WHY LUMETRA • Instant readings — the live meter updates in real time • One clean screen — no menus to dig through • Private by design — on-device only, no network, no data collection • Real photographic units — f-stops, shutter speeds and ISO, plus EV, lux and foot-candles HOW IT WORKS Choose what you've set on your camera — aperture or shutter — pick your film speed, and Luxmo solves the rest. Values snap to standard full, ½ or ⅓ stops, just like a real meter. INCLUDED • Live reflected metering • Aperture priority • EV, lux and foot-candle readout • Hold a reading LUMETRA PRO (one-time purchase) • Spot metering — tap to meter just one part of the scene • Shutter and ISO priority modes • Exposure compensation with ½ / ⅓ stop increments • Saved readings log with notes and CSV export No subscription. Pay once, yours forever. Luxmo is a reflected-light meter and is not affiliated with any camera or film manufacturer.