The Film Friend: Light Meter

Meet Analytics: your film history, tracked for you. See holders, film stock, chemistry and development as charts over time, plus use-a-roll and restock.

A Complete Companion for Film Photography

Built for photographers who work with film every day, this app combines modern design with precise tools for exposure, development, and large-format workflows. Everything is customizable, distraction-free, and designed to support the analog process from capture to darkroom. Guided tutorials and a quick welcome tour help you get started from the very first launch.

Flexible, Modern Interface

• Customizable layout that lets you reorder tools and sections to match your workflow
• Multiple themes for daylight, studio, and darkroom use
• Cloud sync to back up your library and restore it on another device
• Import and export your data, keeping full ownership and portability

Development Tools and History

• Development history to keep a detailed record of past processes
• Custom development processes you can create, edit, import, export, and share with other photographers
• A guided development runner with agitation cues, countdown, and a phase-end alarm that keeps timing even on the lock screen
• Chemistry tracking for batches, capacity, and expiry, with reminders before your chemistry runs out
• A test strip timer for f-stop print exposures, and a mixing calculator for dilutions and volumes
• Temperature unit control with seamless switching between Celsius and Fahrenheit
• Support for the most common photographic processes and kits:
  • Black and White development timers
  • C-41 color negative kits
  • E-6 color reversal kits
  • RA-4 color printing kits
  • ECN-2 motion picture film kits

Darkroom-Friendly Design

• Dedicated darkroom themes designed for film safety
• Spectral color selection to precisely choose wavelengths that minimize the risk of film fogging
• Custom darkroom colors and a clean, low-distraction interface optimized for low-light environments

Exposure and Calculation Tools

• Built-in light meter always available when needed, with spot metering, Zone System placement, aperture or shutter priority, a live histogram, and an EV readout
• Timers with audible alerts for long exposures and development steps
• Reciprocity compensation helper for long-exposure corrections
• Bellows extension compensation for large-format photography
• Depth of field calculator with near and far limits, hyperfocal distance, and a visual preview
• Focal length equivalency across formats
• Film holder management for tracking sheets, holders, statuses, and exposures

Sun Tracker

• Plan natural light for any location and any date: the sun's path, the golden and blue hours, and twilight
• A live augmented reality overlay draws the sun's path over your camera view, so you can see where the light will fall
• Upcoming solar and lunar eclipses with local timing, plus alerts for moments like sunrise or golden hour

More Tools

• Negative preview that inverts your film to a positive in real time, with a library, a curves and tones editor, and contact sheet printing
• Inventory to keep track of your cameras, lenses, tripods, film stock, lights, and accessories, with film expiry reminders

Designed for the Analog Workflow

This app respects traditional photography while taking advantage of your phone's modern capabilities. Whether you are in the field, the studio, or the darkroom, it provides accurate tools and a flexible interface that let you focus on the image instead of the calculations.

Built for film. Designed for photographers.