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.