Darkroom Toolkit vs DevClock

Process film and print in the darkroom, without the math. Darkroom Toolkit is a reference library and set of utilities for film processing and darkroom printing. Browse hundreds of photochemistry formulas, run step-by-step development timers with official manufacturer dev times, and handle common calculations – all in one app. WHY DARKROOM TOOLKIT? • One app instead of separate dev chart, formula, and printing calculator apps • Primary features are free: all darkroom chemistry formulas, official processes, and calculators included • Lifetime Pro unlock for saving favorites, custom workflows, and to support the project FILM DEVELOPING • Pre-configured timers for manufacturer-recommended film + developer combinations • Multi-step processing with optional audio alerts • iOS Live Activity: see your timer on the lock screen • Low light / safelight theme for working in the dark FORMULAS & CHEMISTRY • Extensive darkroom cookbook: developers, toners, lith, alt process, and more • Enter your target volume and every ingredient amount scales automatically • Dilution and solution strength conversion utilities DARKROOM PRINTING • f-Stop printing calculator: exposure sequences and test strip times • Print resizing calculator: new exposure times when changing print size PRO FEATURES (one-time purchase) • Save favorite processes and formulas • Create and edit custom recipes and processing timers • Sync your workflows across devices Whether you're developing your first roll of black and white film, mixing chemistry for cyanotype, or dialing in enlarger exposures, Darkroom Toolkit keeps you consistent. Download free. Upgrade once, yours forever.

DevClock is a focused darkroom companion for black-and-white film work. Build quick timers, follow film development steps, and keep your process readable in low light. DevClock is designed for practical darkroom use: large controls, high-contrast timing screens, red mode, local notifications, haptics, and Live Activities for supported iOS devices. Key features: • Quick Timer for simple countdowns • Film and developer setup for black-and-white workflows • Guided process timing for develop, stop, fix, and wash steps • Red mode for darkroom-friendly viewing • Local notifications and haptic reminders • Live Activities for timer status on supported devices • Custom process plans • English, Simplified Chinese, Traditional Chinese, and Japanese interface options Important note: built-in development times are intended as useful starting points, not guaranteed processing instructions. Always confirm critical film, developer, temperature, and agitation choices against your own workflow and official manufacturer guidance. DevClock is local-first. It does not require an account, does not use analytics, does not include ads, and does not track you.