Silverlog Timer vs DBW FilmCalc

Silverlog Timer is a purpose-built timer for darkroom film and print development, with agitation interval tracking and a red-only display mode for use under safelight conditions. HOW IT WORKS Pick a process, or build your own from steps that each have their own time and agitation interval. Start the timer and it runs through each step in turn, with clear visual and audio cues for each agitation cycle. Red mode switches every screen to a red-only display for print processing. FEATURES • Multi-step processes with a time and agitation interval for each step • Built-in templates for B&W, B&W stand development, C-41, E-6 and print development • Create and save your own processes • Agitation interval tracking with alerts • Red safelight display mode for print darkrooms • Audio alerts for agitation and completion • Countdown with progress through the whole process • Large, readable display • Works offline — no internet connection needed • Dark mode support USEFUL FOR • Black and white film development • C-41 and E-6 processing • Darkroom print development • Any timed chemical process with regular agitation Part of the Silverlog photography toolkit. No account required. No data collected.

DBW FilmCalc is a simple exposure companion for black and white film photographers. Enter what you know and get the exposure you need, then time it from your iPhone. • Bellows: compensation in stops and exposure factor for your lens and bellows extension • Reciprocity: manufacturer-published correction for your film • Exposure: film, metered time and optional bellows, corrected in the right order, with a big result and a START TIMER button • Timer: large full-screen timer that keeps accurate time and stays awake while running, with a soft chime and haptic at the end • Light, dark and red night modes, big touch targets, VoiceOver and Dynamic Type Supported films, each with its data source shown in the app: • Ilford HP5 Plus, FP4 Plus, Delta 100 Professional, Delta 400 Professional, Pan F Plus • Kodak Tri-X 400, T-Max 100, T-Max 400 • Kentmere Pan 100, Pan 400 • Fomapan 100 Classic, 200 Creative, 400 Action No account, no ads, no tracking, no internet needed. The app collects no personal data. Made by Digital Black & White. Results follow manufacturers' published data but depend on your film, developer and conditions, so make test exposures for critical work. Film names are trademarks of their respective owners. Not affiliated with or endorsed by them.