"Psychological Tab Manager" stores the visited URL, time of creation and internal ID of opened tabs using the local storage API. 
The data is used for JavaScript calculation to provide the user with functionality of "Psychological Tab Manager". 
Data is collected and saved under the following circumstances: 
1. A new tab was opened
2. The browser is started
3. A tab is closed
4. A new URL is visited
As soon as a tab is closed, all information associated with that tab is deleted. Should a tab be closed and no data deleted due to internal error, all remaining data related to tabs which are no longer open will be deleted when the browser has been fully closed and reopened. 
"Psychological Tab Manager" furthermore is able to access the content of any website visited, but does not collect or view the information associated with that website in any way.
All data collected is never shared with anyone, sent to a server or made publicly available. 
You can delete all stored data at any time by removing "Psychological Tab Manager" from your browser.