Manhour features a flexible rate structure: it lets you specify what hourly rates should apply during certain time intervals- so you could charge your regular base hourly rate during office hours, then automatically apply overtime rates for those late night stints or use a different rate for weekends and holidays.
You setup Rate Categories, create Projects you want to time-bill for, then let Manhour do the work of recording billable hours (or minutes.. or seconds. Manhour lets you set your own billing block size more...
RequirementsMac OS X 10.5 or later
*Previously available here