DevProCo vs Grain Film Toolkit

DevProCo is a precise development process timer for analog photographers — whether you're developing B&W film, color negative (C-41), slide film (E-6), or darkroom prints (RA-4). FEATURES • Guided step-by-step development sessions with automatic agitation reminders • Text-to-speech announces each step and agitation — keep your hands in the tank • Hands-free voice control: say "next" to advance steps • Automatic chemistry volume and dilution calculator • Built-in process library with pre-configured recipes (Rodinal, DD-X, C-41, RA-4) • Create and save your own custom processes • Share processes with other DevProCo users via QR code • Screen stays on during active sessions • Supports English, German, Spanish and French

grain. is a toolkit built for film photographers who want to work with intention. EXPOSURE CALCULATOR Use the Sunny 16 rule to calculate the correct aperture for any lighting condition. Enter your film ISO and shutter speed — grain. gives you the aperture instantly. Enable Reciprocity Correction for long exposures and let the app compensate for your film's reciprocity failure automatically. FILM ROLL TRACKER Log every roll you shoot. Track film stock, camera body, ISO, and frame count. Update each roll's status from Loaded to Exposed to Developed. Never lose track of what's in your camera or what's waiting to be developed. DARKROOM TIMER Choose a built-in development preset or build your own custom pipeline. The timer walks you through each step — developer, stop bath, fixer, wash — and alerts you when it's time to move on. Safelight Mode switches to a red-safe display so you can work in the dark without fogging your prints. LIGHT METER A built-in incident light meter using your iPhone camera to help you read the light before you shoot. Your photos are saved only on your device. grain. never uploads, shares, or stores your images anywhere.