If you don't want to use Time Tagger you can uninstall it easily. Simply choose Uninstall Time Tagger from the Time Tagger menu. Or click the Uninstall button in the demo window that appears when you launch Time Tagger.
If you decide to uninstall Time Tagger, we would appreciate it if you could take a moment to write to us and tell us why you decided not to use Time Tagger.