Analog.Lab

Analog.Lab is a free toolkit for people who develop their own film and make darkroom prints: a development timer, a printing timer with a red mode, a light meter and a negative viewer. No ads, no sign-up, and no internet access: the app has no network permission, and all your data stays on your phone.

DEVELOP
• Black & white, C-41 and ECN-2. There are no ready-made recipes: you build your own preset from steps and numbers taken from your chemistry's instructions.
• Agitation by intervals: continuous, periodic, or once (stand). Voice, sound and vibration cues.
• The timer keeps running with the screen off and the app minimized.
• Solution volumes calculated for your tank, and a temperature-to-time table for color chemistry.

PRINT
• Red mode: pure red on black, no white flashes and no keyboard.
• Exposure with a 3-2-1 count-in and a metronome, test strips (opening and closing), several sheets in the trays at once, and a shared wash.
• Fog test for your phone screen.

METER
• Light meter using the phone camera, including spot metering, and the ambient light sensor for incident light.
• Equivalent exposure pairs with aperture or shutter priority, and profiles for your cameras with their real shutter speeds and apertures.
• Calibration against any reference, histogram, and a rangefinder (on phones whose camera supports it).

NEGATIVE
• Point the camera at a developed film on a light source and see the positive live: black & white, C-41 color with orange mask correction, and slides.
• Tap the film edge to set the base, lock the picture, freeze a frame, adjust brightness, contrast and warmth, and save a snapshot to your gallery.
• Light panel: a second phone becomes a white light table for your negatives.
• This is a quick preview for choosing frames to print, not a scan: colors are approximate.

LOG
• Development and print log, chemistry notes, and preset sharing as a file.

Light, dark, and red-and-black themes for the whole app, adjustable text size, Russian and English, a detailed guide and FAQ.

PRIVACY
The app collects nothing and sends nothing. The camera is used to measure light and to view negatives on the phone itself; a snapshot is saved only when you tap Save, to your own gallery.

The app is free. If it is useful to you, you can support the author with an optional donation; nothing is unlocked by donating.

Recent changes:
New Negative tab: point the camera at a developed film and see the positive right away. B&W, C-41 colour with orange mask correction, and slides. Lock, freeze, brightness, contrast, warmth, save a snapshot to the gallery.
Light panel: turn a second phone into a white light table for negatives.
The Log moved from the bottom bar to the Develop and Print screens.
More reliable camera when switching tabs quickly.