Do I need to install a browser extension to use TMetric?
No, you don't. Installing a browser extension is not required to use TMetric – you can use the web application, desktop client or both of them together without the extension.
However, the TMetric browser extension can significantly simplify your time tracking process. This is possible due to the extension ability to integrate with external systems such as Jira, Trello, GitHub, Asana and others. When the extension is integrated with an external tool, you can start the TMetric timer directly from that tool's interface, for example:
Note: If you want to synchronize time with Jira or Redmine, you should definitely use the browser extension, since tasks in TMetric and in the specified systems won't be linked and time won't be synchronized.