Digitaltruth Photo Ltd announces the launch of version 3.0 of The Massive Dev Chart Timer app, available on the App Store and Google Play. The Massive Dev Chart is the world's largest film development chart with multi-step timer and darkroom support for Apple iOS and Android devices. The app contains development times for over 18,000 combinations of black and white films and developers. The easy-to-use interface lets you adjust film development time automatically by temperature, store lists of your favorite customized film/developer combinations, modify preferred agitation schemes and find the correct volumes of liquid depending on the developer dilution. The multi-step film development timer helps you to achieve consistent results, while convenient sound and visual notifications remind you to agitate your tank as you listen to your favorite iTunes music. Version 3.0 includes a new Sharing feature that allows users to import and export their saved development times. Your favorite times can now be shared between devices or distributed to groups by email. The Massive Dev Chart Timer app is used by thousands of passionate black and white photographers around the world.