Light Meter EV: Luxwell
Sunny 16 Exposure Calculator
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Luxwell is a pocket light meter for iPhone. Measure reflected, incident, and spot EV live from the camera, then set shutter, aperture, and ISO. The meter and Sunny 16 calculator stay free.
Point at the scene, the light on your subject, or a single tone. Hold a reading when you have it. Switch the readout between EV, lux, and foot-candles. Built for film and digital photographers who want exposure they can trust in the field.
LIVE METER
Reflected, incident, and spot modes
Tap and pinch the spot reticle. Spot locks exposure so you can compare tones
Hold to freeze a reading
Shutter, aperture, and ISO in 1/3-stop steps
EV, lux, or foot-candles
SUNNY 16
Free exposure calculator. Pick ISO for a shutter at f/16, or pick shutter and aperture for a suggested ISO. A fast outdoor starting point, then adjust for haze, backlight, or subject brightness.
LUXWELL PRO
Optional one-time unlock. Not a subscription. Live metering stays free.
Zone system scale on the live meter
Manual 0.1-stop calibration, or guided Align to Sunny 16
Shoot log with export
Film ISO helper with reciprocity warning
Extra camera presets
Restore Purchases is in Settings.
Luxwell uses the iPhone camera to estimate scene brightness. Results are useful for exposure decisions but are not laboratory-grade and may differ from a calibrated handheld meter.
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Privacy Policy: https://luxwell.paprikatech.io/privacy
Terms of Use: https://luxwell.paprikatech.io/terms
Support: support@paprikatech.io
Ratings & Reviews
The App Store name is now Light Meter EV: Luxwell. The meter is unchanged.
The developer, Paprika Tech LLC, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paprika Tech LLC
- Size
- 15 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime $19.99
- Copyright
- © Zohar Shechter