The "Time Tracker" add-on for Blender is designed to help you track the time spent in their Blender projects. It measures three main types of time:

Session Time: Tracks time spent during the current session.

Project Time: Records the total time spent on each individual Blender project and saves this information directly inside the .blend file. This allows each project to carry its own cumulative time data.

Total Time: Accumulates all time spent across all sessions and projects, saved in an external JSON file within the add-on’s directory.

Each time category is updated in real time and displayed in the 3D View > Time Tracker panel, giving a clear view of how much time you has invested in a project or across all Blender usage.