Core Timer
Use the darkroom-friendly timer for Focus, Expose, and Process timing with large controls.
Safelight Darkroom Timer
F-Stop Print Calculator.
Darkroom-friendly timer, f-stop calculator, test strip runner, and saved print sessions for repeatable analog printing.
See it in action.
Free calculation tools.
Core calculation and timer features are free to start.
F-Stop Calculator
Turn one base exposure time into a stop-based table using free 1/4 and 1/3 stop steps.
Test Strip Runner
Send a result to the timer or run a test strip one exposure at a time.
Saved Print Sessions
Save up to 3 print sessions with base exposure, paper, filter grade, developer, and notes.
Print Process Timer
Manage darkroom metadata presets and use the timer for expose, develop, stop bath, fix, and wash steps.
Darkroom Display Themes
Red, amber, and green darkroom display themes with optional haptic feedback, sound, and keep-screen-on behavior.
Pro workflow tools.
Upgrade to Safelight Pro for unlimited sessions, advanced stop steps, Dodge & Burn planning, and CSV/Text export.
Unlimited Sessions
Unlock unlimited saved sessions to organize all your best darkroom prints.
Advanced Stop Steps
Unlock 1/6, 1/2, and 1 stop steps as calculator, default, and session save choices.
Dodge & Burn Planner
Pro workflow for memory banks, burn/dodge actions, run plan, and export notes.
Export & Share
Export calculator tables, test strip plans, session texts, and all sessions as CSV.
Important Safety Notice.
Safelight is a darkroom-friendly display and timing utility. It is not a guarantee that a phone screen is safe for every photographic paper or film. Always test your own paper and darkroom conditions.
Made for practical users.
- Analog printmakers
- Darkroom enthusiasts
- Film photographers
- Alternative process printers
Ready for your next darkroom session.
Safelight is free to start. Upgrade to Pro for unlimited sessions, Dodge & Burn, and advanced export.
Need help? Visit Safelight Support.