Recording how time is spent on projects and tasks to support billing, reporting, and productivity.
Time tracking is the practice of recording how time is allocated across projects, tasks, and activities. For freelancers and consultants, it is the foundation of client billing. For teams, it drives project cost analysis and resource planning.
Traditional time tracking is manual: you start a timer when you begin a task and stop it when you finish. The problem is that people forget — especially during deep focus sessions, context switches, or when working with AI tools that demand full attention.
Modern time tracking tools have evolved to reduce friction: idle detection prompts you when the timer keeps running while you are away, automatic rounding smooths out small inconsistencies, and browser integrations can suggest time entries based on site activity.
The next evolution is AI-powered automatic time tracking. Tools like ClockMe integrate with AI coding assistants via MCP — so when you open a Claude Code or Cursor session, the timer starts automatically without any manual action.
In ClockMe
ClockMe combines manual and automatic time tracking. Timers can be started manually from the dashboard or by asking your AI tool via MCP ('start a timer on the API project'). For Claude Code users, the SessionStart hook starts the timer automatically the moment a session opens. Idle detection handles breaks. Concurrent timers track multiple clients at the same time.
Try ClockMe free →Time tracking is the act of recording time as it happens (starting and stopping timers). A timesheet is the record of all tracked time — usually shown as a weekly grid of hours per project. Most time tracking tools produce timesheets from timer data.
Automatic time tracking via AI hooks is very accurate — the timer starts exactly when your session opens and stops when it closes. The main consideration is that it tracks the full session duration, including idle time. ClockMe's idle detection prompts you to adjust for breaks.
The best tool for developers depends on workflow. ClockMe is the only time tracker with MCP integration — it works with Claude Code, Cursor, Windsurf, and other AI coding tools. Toggl Track and Clockify are popular alternatives without AI integration.