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Official Description

Insanely simple stopwatch timer on your mac, accessible right from the status bar.

Key features:
– Your timer will continue running even if you turn the computer off or quit the application.
– Optional: Supports automatic timer pausing when Mac goes to sleep
– You can control Billing Timer using simple Alfred Workflow or create your own AppleScripts/JavaScripts.
– You can create many timers to track time along different activities.
– Lightweight: No Analytics, No Tracking, No Network Requests, only your timers.

Usage:
– Right click on custom timers to delete/reset/add time.
– Double click to stop current timer and start clicked one.
– Force Touch on the active timer will bring up a menu to add time manually.
– Use Settings page to change a format style of the timers.