Highly rated iOS, Android and PC timekeeping apps include Time Master, Timesheet and Harvest, as of 2016. Additional timekeeping apps include Toggl, FreshBooks, Hours Keeper Pro and Hours Keeper Pro.
Time Master is a comprehensive iOS timekeeping app that features expense tracking, search and file importing functions. Timesheet is a free Android app that allows users to track projects, add breaks and create notes.
Harvest is a timekeeping app that works on iOS, Android and PC platforms. The app features simple time tracking, online invoicing and expense tracking. Toggl works on multiple platforms, and it is compatible with QuickBooks and Basecamp software. Toggl has tiered pricing with additional features available for each tier.