ictime enhances existing JIRA time tracking options with many features that make time tracking more powerful, efficient and convenient and it adds flexible reporting and accounting capabilities. However, ictime still writes JIRA work logs in the JIRA database and also uses parts of the basic time tracking logic from JIRA. For documentation of JIRA default time tracking, please refer to http://confluence.atlassian.com/display/JIRA/Logging+Work+on+an+Issue and http://confluence.atlassian.com/display/JIRA/Configuring+Time+Tracking.