Time+ Touch HD app, by SixAxis is currently free today only (10-26-2013; regularly 1.99). Set the time up to 11 hr. 59 minutes and allow it to run in the background when using other apps. Provides visualization for hours (blue), minutes (red) and seconds (green). Compatible with iPhone/iPads.
A great tool to provide visual support (an evidence based practice) for individuals with autism. Visual timers also can support individuals with behavioral, cognitive or developmental challenges.
What is your favorite visual timer?