Darkroom Clock

Darkroom Clock is a flexible darkroom timer iPhone app suitable for both film and photo development. Build your own development recipes with separate timers for each stage of your development process.

The app includes

• fully configurable development recipes.
• darkroom mode (safe to use with B&W photographic paper).
• clear display with all the information you need.
• the whole screen is the start/stop button for the timers.
• notifications if you leave the app while a timer is still running.

Also the app is free so there is no reason to not download it.