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DevProCo – Film Dev Timer

Christoph Kretschmer

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About this app

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 • 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

What's new

Version 2.0.1 · Oct 26, 2026

- Bug fixes and improvements

In-app purchases

The most popular purchases on the App Store.

  • PremiumConsumableUSD 4.99

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