LumaCue Light Meter
Film Exposure Meter
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Master manual exposure. LumaCue brings a precise film photography workflow to your iPhone with spot metering, reciprocity alerts, and exposure triangle tools.
LumaCue Light Meter is a dedicated companion for film and manual photographers. Turn your iPhone into a reliable reflective light meter to make confident exposure decisions in the field.
Designed for the analog workflow, LumaCue focuses on the essential tools you need for manual shooting. Whether you are using a vintage rangefinder, a pinhole camera, or a fully manual digital setup, LumaCue provides the exposure cues to help you get the shot.
Key Features:
- Live Reflective Metering: Use the camera preview with a movable spot reticle to sample scene luminance and get approximate EV readings with real-time confidence indicators.
- Exposure Triangle Solver: Fix your ISO, aperture, or shutter speed to instantly see equivalent exposure combinations.
- Film Workflow Presets: Choose from generic film speed profiles like B&W 400, Color Negative 200, or Slide 100 to streamline your setup.
- Reciprocity Helper: Receive conservative warnings and compensation hints when your shutter speed enters long-exposure territory.
- Honest Calibration: Manually adjust your meter with a +/- EV offset to match your trusted hardware or specific scene requirements.
Who is it for?
LumaCue is built for photographers who value a lightweight, on-device tool for manual exposure. It is perfect for those shooting film stocks or using cameras without built-in metering.
Honest Framing:
LumaCue is an approximate reflective light meter for manual exposure decisions. It uses the iPhone camera sensor to estimate scene brightness and is not a replacement for a professional incident meter or dedicated hardware metering equipment. All camera frames are processed on-device and are never saved or uploaded.
One-time purchase. No subscriptions. No ads.
Ratings & Reviews
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The developer, Zcode, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shenzhen Liubai Software Co., Ltd
- Size
- 2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Unlock $4.99
- Copyright
- © 2026 zcode