kthoom is an open source project. There is no legal entity (company) associated with this project, only developers who donate their time.
This project does not collect any information about anything you read with kthoom.
This project does not use browser cookies.
If you are uncomfortable with kthoom using Google Analytics or accessing servers over the network, it is totally within your rights to clone the github repository, remove the GA code from the HTML, and then run a local web server to host your own copy to read comic books on your local hard drive.