Luxmo
Light meter for photographers
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
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.
Terms of Use (EULA): https://obelisk.club/lightmeter/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 678.9 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Luxmo Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.