The #1 app for film developing. The Massive Dev Chart Timer combines an advanced multi-step darkroom timer with an offline copy of the world’s largest database of film development times; maintained online since 1995 and currently including over 15,000 unique tried and tested entries unavailable elsewhere.This app is maintained directly by Digitaltruth Photo Ltd and we offer full lifetime support and guaranteed updates.Darkroom Timer / Film Developing TimerRequires Android 2.2 or higher.??? Features ???